2024 MAY

#include<stdio.h>

void main ()

int age, vaccination;

printf("Enter age = ");

scanf("%d", &age);

printf("\nEnter vaccination details = ");

scanf("%d", &vaccination);

(age >= 60 && vaccination == 2)? printf("\nSenior citizen and eligible for booster. \n"):
printf("\nbelow 60 and eligible for vaccination.");

pattern

#include <stdio.h>
void main ()
{
int row, i, j;

printf("Enter no of rows: \n");

scanf("%d", &row);
for (i=1; i<=row ; i++)
{
for(j=1; j<=i; j++)
{
printf("%d", i);

printf("\n");
}
}

#include <stdio.h>

void main()
{
char character;

printf("Enter an alphabet = ");

scanf("%c", &character);

switch (character)
{
case 'a':
case 'e':
case 'i':
case 'o':
case 'u':
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':
printf("%c is a vowel \n", character);
break;
 default:
if ((character >= 'a' && character <= 'z') || (character >= 'A' && character <= 'Z'))
{
printf("%c is a consonant.\n", character);
}
else
{
printf("%c is not an alphabet.\n", character);
}
break;
}
}

#include<stdio.h>
#include<conio.h>
void main()

{
int check=0, number, i;

printf("Check whether a number is prime number or not. \n");

printf("Enter the number you would like to check: \n");
scanf("%d",&number);

for (int i=2; i<=number/2; ++i)

{
if (number%i == 0)
check = 1;
}

if (check==0 && number!=0 || number!=1)

{
printf("%d is a Prime Number.", number);
}
else
{
 printf("%d is not a Prime Number", number);
}

#include <stdio.h>
#include <math.h>

int main()
{
float a,b,c,r1,r2,d;
//Input coefficients from the user
printf("Enter the value for a,b,c: \n");
scanf("%f %f %f", &a,&b,&c);

d = b*b - 4*a*c;

//Case 1:Two distinct real roots

if (d>0)
{
r1 = (-b +sqrt(d))/2+a;
r1 = (-b -sqrt(d))/2+a;

printf ("The real roots are: %f %f", r1,r2);

}
//Case 2:Two equal real roots
else if (d==0)
{
r1 = r2 = -b/(2*a);
printf ("Roots are equal, which is : %f %f", r1, r2);
}
//Case 3:Complex roots
else
{
printf ("Roots are imaginary");
 }

getch();
return 0;
}

string –
try it out again
#include <stdio.h>
#include <string.h>

int main() {
char str[100], oldChar, newChar;
int i;

printf("Enter a string: ");

fgets(str, sizeof(str), stdin);

str[strcspn(str, "\n")] = '\0';

printf("Enter the character to replace: ");

scanf("%c", &oldChar);
getchar();

printf("Enter the new character: ");

scanf("%c", &newChar);

for (i = 0; str[i] != '\0'; i++) {

if (str[i] == oldChar) {
str[i] = newChar;
}
}

printf("Modified string: %s\n", str);

return 0;
}
#include<stdio.h>

void main()

{
int i, j, n;
float sum = 0;
float avg = 0;

printf("Enter the number of integers. \n");

scanf("%d", &n);

int arr[n];

printf("\nEnter the elements for the array. \n");

for(i = 0; i<n; i++)
{
scanf("%d", &arr[i]);
sum += arr[i];
}
printf("\nElements of the array are:\n");
for (i = 0; i < n; i++)
{
printf("%d ", arr[i]);
}

printf ("\n\nSum of the entered elements = %lf", sum);

avg = (sum/n);

printf ("\n\nAverage of the entered elements = %lf", avg);

}
 power
Using power function
#include <stdio.h>
#include <math.h>

int main()
{

double n, x, result = 0;

printf("Enter the base number = ");

scanf("%lf", &x);

printf("Enter power = ");

scanf("%lf", &n);

result = pow(x,n);
printf("%lf raised to %lf = %lf", x,n,result);
}

Without using power function

#include <stdio.h>
#include <stdlib.h>
int main()
{

int x, n, m, i, Result = 1;
double result = 1;
double answer = 0;

printf("Enter the base number = ");

scanf("%d", &x);

printf("Enter power = ");

scanf("%d", &n);

if (n <0)
 {
m = abs(n);
for ( i = 1; i<= m; i++)
{
result *= x;

}
answer = (1/result);
printf("answer = %lf",answer);
}
else if (n ==0)
{
printf("%d raised to 0 = 1 ", x);
}
else
{
for ( i = 1; i<=n; i++)
{
Result *= x;

}
printf("%d raised to %d = %d", x,n,Result);

}
return 0;
}

matrix
#include <stdio.h>

int main() {

int i,j,row,column,sum;
sum=0;

printf("Enter no of rows: \n");

scanf("%d",&row);
printf("Enter no of columns: \n");
scanf("%d",&column);

int arr[row][column];

if ( row != column)
{
printf("\nEntered dimensions for the matrix does not form a square matrix. \n");
}
else
{
printf("Enter elements of matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
scanf("%d",&arr[i][j]);
}
}
printf("Matrix: \n");
for(i=0;i<row;i++) {
for(j=0;j<column;j++) {
printf(" %d ",arr[i][j]);
}
printf("\n");
}

for(i=0;i<row;i++) {
for(j=0;j<column;j++)
{
if(i==j)
{
sum+=arr[i][j];
}
}
}
 printf("Sum of principal diagonal elements of above square matrix = %d",sum);
}
return 0;
}

#include <stdio.h>
#include <conio.h>

//Declaration of function gcd

int gcd (int,int);

int main()
{
int num1, num2, result;
printf("Enter two numbers. \n");
scanf("%d %d", &num1, &num2);

//Call the gcd function and store the result

result = gcd(num1,num2);

printf("\nThe GCD for the entered numbers is %d \n", result);

getch();
return 0;
}

// Recursive function to calculate GCD

int gcd (int num1, int num2)
{
while(num1!=num2)

if (num1>num2)
{
return gcd(num1-num2,num2);
}
else if (num2>num1)
{
return gcd(num1,num2-num1);
 }
else
{
printf("Invalid Input.");
}

return num1;
}

2023 MAY

#include <stdio.h>

int main ()
{
int number1, number2, number3;

printf("Enter three numbers of your choice. \n");

scanf("%d %d %d", &number1, &number2, &number3);

if (number1 > number2 && number1 > number3)

{
printf("%d is the largest. \n", number1);
}
else if (number2 > number1 && number2 > number3)
{
printf("%d is the largest. \n", number2);
}
else
{
printf("%d is the largest. \n", number3);
}
return 0;
}
#include <stdio.h>

void bubbleSort(int arr[], int n)

{
int temp;
for (int i = 0; i < n-1; i++) {

for (int j = 0; j < n-i-1; j++) {

if (arr[j] > arr[j+1]) {
temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
}
}
}
}

int main() {
int n;

printf("Enter the number of elements in the array: ");

scanf("%d", &n);

int arr[n];
printf("Enter the elements of the array: \n");
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}

bubbleSort(arr, n);

printf("Sorted array in ascending order: \n");

for (int i = 0; i < n; i++) {
printf("%d ", arr[i]);
}
 printf("\n");

return 0;
}

#include <stdio.h>

int main()
{
int x, result;

printf("Enter the number = ");

scanf("%d", &x);

if (x<0)
{
printf("\nEnter an positive integer.");
return 1;
}
else
{
if(0<=x && x<=10)
{
result = ((x*x)+ 2);
printf("Result of the function = %d", result);
}
else if(10<x && x<=20)
{
result = ((x*x)+ 2*x);
printf("Result of the function = %d", result);
}
else if(20<x && x<=30)
 {
result = ((x*x*x)+ 2*x*x);
printf("Result of the function = %d", result);
}
else
{
printf("Result of the function = 0");
}

}
return 0;
}

#include <stdio.h>
#include<conio.h>
#include <string.h>

// Function to check if a string is a palindrome

void ispalindrome(char str[])
{
int i, length;
int flag = 0;
length = strlen(str); // Calculate the length of the string

for (i = 0; i < length / 2; i++)

{
if (str[i] != str[length - i - 1]) // Compare corresponding characters
{
flag = 1; // Set flag if mismatch is found
break;
}
}

if (flag == 1)
{
printf("%s is not a palindrome \n", str);
 }
else
{
printf("%s is a palindrome \n", str);
}
}

int main()
{
char string[20];

printf("Enter a string: \n");

scanf("%s", string);

// Call the function to check for palindrome

ispalindrome(string);

getch();
return 0;
}

#include <stdio.h>

int main()
{
int number, i, root = 0;
printf("Enter a number: ");
scanf("%d", &number);

if (number < 0)
{
printf("Enter a positive integer.\n");

else{
 for (i = 1; i <= number / 2; i++)
{
if (i * i == number)
{
root = i;
break;
}
}

if (root != 0)
{
printf("The square root of %d is %d \n", number, root);
}
else
{
printf("%d is not a perfect square\n", number);
}

}
return 0;
}

#include<stdio.h>
#include <conio.h>
void main()

{
int check=0, number, i;

printf("Check whether a number is prime number or not. \n");

printf("Enter the number you would like to check: \n");
scanf("%d",&number);

for (int i=2; i<=number/2; ++i)

{
if (number%i == 0)
check = 1;
 }

if (check==0 && number!=0 || number!=1)

{
printf("%d is a Prime Number.", number);
}
else
{
printf("%d is not a Prime Number", number);
}

power
#include <stdio.h>
#include <stdlib.h>

double power(int base, int exponent) {

if (exponent == 0) {
return 1;
}

if (exponent < 0) {
return 1.0 / base * power(base, exponent + 1);
}

return base * power(base, exponent - 1);

}

int main() {
int x, n;

printf("Enter the base number: ");

scanf("%d", &x);

printf("Enter the exponent: ");

scanf("%d", &n);
 double result = power(x, n);

if (n < 0) {
printf("%d raised to %d = %lf\n", x, n, result);
} else {
printf("%d raised to %d = %lf\n", x, n, result);
}

return 0;
}

pattern
#include <stdio.h>

void main ()
{
int row, i, j;
printf("Enter no of rows: \n");
scanf("%d", &row);

printf("\nThe pattern is: \n");

for (i=row; i>0 ; i--)

{
for(j=1; j<=i; j++)
{
printf("%d", j);
}
printf("\n");
}
}

matrix
#include <stdio.h>
int main() {
int i,j,row,column;
printf("Enter no of rows: \n");
scanf("%d",&row);
printf("Enter no of columns: \n");
scanf("%d",&column);

int arr[row][column];
if ( row != column)
{
printf("\nEntered dimensions for the matrix does not form a square matrix. \n");
return 1;
}
else
{
printf("Enter elements of matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
scanf("%d",&arr[i][j]);
}
}
printf("Matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
printf(" %d ",arr[i][j]);
}
printf("\n");
}

for(i=0;i<row;i++)
 {
for(j=i+1;j<column;j++)
{
arr[i][j] = arr[i][j] + arr[j][i];
arr[j][i] = arr[i][j] - arr[j][i];
arr[i][j] = arr[i][j] - arr[j][i];
}
}
printf("Transpose of the Matrix: \n");

for(i=0;i<row;i++) {

for(j=0;j<column;j++) {

printf(" %d ",arr[i][j]);

printf("\n");

}
}
return 0;
}

DECEMBER 2023

#include <stdio.h>

void main()
{
int check, i, temp;
 printf("Prime numbers from 1-50 are: \n");

for (temp =1; temp<=50; temp++)

{
check =0;

for (i=2; i<=temp/2; i++)

{
if (temp%i==0)
{
check++ ;
}
}
if (check==0 && temp!= 1)
{
printf("%d \t",temp);
}
}

pattern
#include <stdio.h>

int main() {
int rows, i, j;

printf("Enter the number of rows:\n");

scanf("%d", &rows);

for (i = 1; i <= rows; i++)

{

for (j = 1; j <= rows - i; j++)

 {
printf(" ");
}

for (j = i; j >= 1; j--) {

printf("%d", j);
}

printf("\n");
}

return 0;
}

power
#include <stdio.h>
#include <stdlib.h>

double power(int base, int exponent) {

if (exponent == 0) {
return 1;
}

if (exponent < 0) {
return 1.0 / base * power(base, exponent + 1);
}

return base * power(base, exponent - 1);

}

int main() {
int x, n;

printf("Enter the base number: ");

scanf("%d", &x);

printf("Enter the exponent: ");

 scanf("%d", &n);

double result = power(x, n);

if (n < 0) {
printf("%d raised to %d = %lf\n", x, n, result);
} else {
printf("%d raised to %d = %lf\n", x, n, result);
}

return 0;
}

#include <stdio.h>

int main()
{
int i, factorial = 1 , num;

printf("Enter the number for which you want to calculate the factorial: \n");
scanf("%d",&num);

for(i = 1; i<= num; i++)

{
factorial *= i;
}
printf("Factorial of %d = %d", num, factorial);

#include <stdio.h>

int main()
{
int number, i;

printf("Enter number of elements in the array: \n");

scanf("%d", &number);

if (number <= 0)
{
printf("Array is empty. \n");
return 0;
}

int arr[number];
printf("\nEnter the elements of the array: \n");

for (i = 0; i < number; i++)

{
scanf("%d", &arr[i]);
}
int largest = arr[0];

for (i = 1; i < number; i++)

{
if (arr[i] > largest)
{
largest = arr[i];
}
}

printf("Largest Element = %d\n", largest);

return 0;
}

matrix
#include <stdio.h>

int main()
{
int a[5][5],i,j,r,c,sum;
sum=0;
printf("Enter rows:");
scanf("%d",&r);
printf("Enter columns:");
scanf("%d",&c);
printf("Enter elements of matrix");
for(i=0;i<r;i++) {
for(j=0;j<c;j++) {
scanf("%d",&a[i][j]);
}
}
for(i=0;i<r;i++) {
for(j=0;j<c;j++) {
printf("%d ",a[i][j]);
}
printf("\n");
}

for(i=0;i<r;i++) {
for(j=0;j<c;j++) {
if(i!=j) {
sum+=a[i][j];
}
}
}
printf("%d",sum);

return 0;
}

#include <stdio.h>

int main()
{
int number, i, root = 0;
 printf("Enter a number: ");
scanf("%d", &number);

if (number < 0)
{
printf("Enter a positive integer.\n");

else{
for (i = 1; i <= number / 2; i++)
{
if (i * i == number)
{
root = i;
break;
}
}

if (root != 0)
{
printf("The square root of %d is %d \n", number, root);
}
else
{
printf("%d is not a perfect square\n", number);
}

}
return 0;
}

#include <stdio.h>
int add (int, int);

int add(int num1, int num2)

{
 int sum = 0;
sum = num1 + num2;
return sum;
}

int main() {
int number1, number2, sum;

printf("Enter the first number: ");

scanf("%d", &number1);

printf("Enter the second number: ");

scanf("%d", &number2);

sum = add(number1, number2);

printf("The sum of %d and %d is: %d\n", number1, number2, sum);

return 0;
}

2022 MAY

#include <stdio.h>

int main()
{
int rem, num, temp, sum = 0;

printf("Enter a number: \n");

scanf("%d",&num);

temp = num ;

while (num)
 {
rem = num%10;
sum = sum + (rem * rem * rem);
num = num/10;
}

if(temp ==sum)
{
printf ("%d is an armstrong number",temp);
}
else
{
printf ("%d is not an armstrong number",temp);
}
return 0;
}

#include <stdio.h>

void bubbleSort(int arr[], int n)

{
int temp;
for (int i = 0; i < n-1; i++) {

for (int j = 0; j < n-i-1; j++) {

if (arr[j] > arr[j+1]) {
temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
}
}
}
}

int main() {
int n;
 printf("Enter the number of elements in the array: ");
scanf("%d", &n);

int arr[n];
printf("Enter the elements of the array: \n");
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}

bubbleSort(arr, n);

printf("Sorted array in ascending order: \n");

for (int i = 0; i < n; i++) {
printf("%d ", arr[i]);
}
printf("\n");

return 0;
}

power
#include <stdio.h>
#include <stdlib.h>

double power(int base, int exponent) {

if (exponent == 0) {
return 1;
}

if (exponent < 0) {
return 1.0 / base * power(base, exponent + 1);
}

return base * power(base, exponent - 1);

}
int main() {
int x, n;

printf("Enter the base number: ");

scanf("%d", &x);

printf("Enter the exponent: ");

scanf("%d", &n);

double result = power(x, n);

if (n < 0) {
printf("%d raised to %d = %lf\n", x, n, result);
} else {
printf("%d raised to %d = %lf\n", x, n, result);
}

return 0;
}

pattern
#include <stdio.h>
void main ()
{
int row, i, j;
printf("Enter no of rows: \n");
scanf("%d", &row);

printf("\nThe pattern is: \n");

for (i=1; i<=row ; i++)
{
for (j =1; j<=i; j++)
{
 if ((i+j)%2 == 0)
{
printf("0");
}
else
{
printf("1");
}

}
printf("\n");
}
}

#include <stdio.h>

int fact(int num)

{
int factorial = 1;
for(int i = 1; i<= num; i++)
{
factorial *= i;
}
return factorial;
}

int main ()
{
int factorial = 1 , num;

printf("Enter the number for which you want to calculate the factorial: \n");
scanf("%d",&num);

factorial = fact(num);
printf("Factorial of %d = %d", num, factorial);

return 0;
}

matrix
#include <stdio.h>
int main() {
int i,j,row,column;
int check = 1;
printf("Enter no of rows: \n");
scanf("%d",&row);
printf("Enter no of columns: \n");
scanf("%d",&column);

int arr[row][column];
if ( row != column)
{
printf("\nEntered dimensions for the matrix does not form a square matrix. \n");
return 1;
}
else
{
printf("Enter elements of matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
scanf("%d",&arr[i][j]);
}
}
printf("Matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
printf(" %d ",arr[i][j]);
}
printf("\n");
}
 for (i = 0; i < row; i++) {
for (j = 0; j < column; j++) {
if (arr[i][j] != arr [j][i])
{
check = 0;
break;
}
break;
}
} if (check == 1) {
printf("Matrix is symmetric.\n");
} else {
printf("Matrix is not symmetric.\n");
}
return 0;
}
}

#include <stdio.h>

int main ()
{
int number1, number2, number3;

printf("Enter three numbers of your choice. \n");

scanf("%d %d %d", &number1, &number2, &number3);

if (number1 > number2 && number1 > number3)

{
printf("%d is the largest. \n", number1);
}
else if (number2 > number1 && number2 > number3)
{
printf("%d is the largest. \n", number2);
}
 else
{
printf("%d is the largest. \n", number3);
}
return 0;
}

#include <stdio.h>
#include<conio.h>
#include <string.h>

// Function to check if a string is a palindrome

void ispalindrome(char str[])
{
int i, length;
int flag = 0;
length = strlen(str); // Calculate the length of the string

for (i = 0; i < length / 2; i++)

{
if (str[i] != str[length - i - 1]) // Compare corresponding characters
{
flag = 1; // Set flag if mismatch is found
break;
}
}

if (flag == 1)
{
printf("%s is not a palindrome \n", str);
}
else
{
printf("%s is a palindrome \n", str);
}
}
int main()
{
char string[20];

printf("Enter a string: \n");

scanf("%s", string);

// Call the function to check for palindrome

ispalindrome(string);

getch();
return 0;
}

DECEMBER 2022

pattern
#include <stdio.h>
int main() {

int rows, i, j, num =1;

printf("Enter the number of rows:\n");
scanf("%d", &rows);

for (i = 1; i <= rows; i++)

{
for (j = 1; j<=i ; j++)
{
printf("%d ", num);
num++;
}
printf("\n");
}
return 0;
}

#include <stdio.h>
#include <conio.h>

//Declaration of function gcd

int gcd (int,int);

int main()
{
int num1, num2, result;
printf("Enter two numbers. \n");
scanf("%d %d", &num1, &num2);

//Call the gcd function and store the result

result = gcd(num1,num2);

printf("\nThe GCD for the entered numbers is %d \n", result);

getch();
return 0;
}

// Recursive function to calculate GCD

int gcd (int num1, int num2)
{
while(num1!=num2)

if (num1>num2)
{
return gcd(num1-num2,num2);
}
else if (num2>num1)
{
return gcd(num1,num2-num1);
}
else
 {
printf("Invalid Input.");
}

return num1;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int stringlen(char str[])

{
int length = 0;
for (int i = 0; str[i] != '\0'; i++) {
length++;
}
return length;
}

int main()
{
char str[100];
int length;

printf("Enter a string: ");

scanf("%s", str);

length = stringlen(str);

printf("The length of the string is: %d\n", length);

return 0;
}

#include <stdio.h>

void main()
{
int check, i, temp;

printf("Prime numbers from 100-500 are: \n");

for (temp =100; temp<=500; temp++)

{
check =0;

for (i=2; i<=temp/2; i++)

{
if (temp%i==0)
{
check++ ;
}
}
if (check==0 && temp!= 1)
{
printf("%d \t",temp);
}
}

#include<stdio.h>

void main()

{
int i, j, n;
float sum = 0;
float avg = 0;

printf("Enter the number of integers. \n");

scanf("%d", &n);

int arr[n];
 printf("\nEnter the elements for the array. \n");
for(i = 0; i<n; i++)
{
scanf("%d", &arr[i]);
sum += arr[i];
}
printf("\nElements of the array are:\n");
for (i = 0; i < n; i++)
{
printf("%d ", arr[i]);
}
avg = (sum/n);
printf ("\n\nAverage of the entered elements = %lf", avg);
}

#include <stdio.h>
#include<conio.h>
#include <string.h>

// Function to check if a string is a palindrome

void ispalindrome(char str[])
{
int i, length;
int flag = 0;
length = strlen(str); // Calculate the length of the string

for (i = 0; i < length / 2; i++)

{
if (str[i] != str[length - i - 1]) // Compare corresponding characters
{
flag = 1; // Set flag if mismatch is found
break;
 }
}

if (flag == 1)
{
printf("%s is not a palindrome \n", str);
}
else
{
printf("%s is a palindrome \n", str);
}
}

int main()
{
char string[20];

printf("Enter a string: \n");

scanf("%s", string);

// Call the function to check for palindrome

ispalindrome(string);

getch();
return 0;
}

Error
Semicolon after for loop

#include <stdio.h>
int main ()
{
int number1, number2, number3;

printf("Enter three numbers of your choice. \n");

scanf("%d %d %d", &number1, &number2, &number3);

if (number1 > number2 && number1 > number3)

{
printf("%d is the largest. \n", number1);
}
else if (number2 > number1 && number2 > number3)
{
printf("%d is the largest. \n", number2);
}
else
{
printf("%d is the largest. \n", number3);
}
return 0;
}

#include <stdio.h>
int main() {
int i,j,row,column;
int check = 1;
printf("Enter no of rows: \n");
scanf("%d",&row);
printf("Enter no of columns: \n");
scanf("%d",&column);

int arr[row][column];
if ( row != column)
{
printf("\nEntered dimensions for the matrix does not form a square matrix. \n");
return 1;
}
else
 {
printf("Enter elements of matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
scanf("%d",&arr[i][j]);
}
}
printf("Matrix: \n");
for(i=0;i<row;i++)
{
for(j=0;j<column;j++)
{
printf(" %d ",arr[i][j]);
}
printf("\n");
}
for (i = 0; i < row; i++) {
for (j = 0; j < column; j++) {
if (arr[i][j] != arr [j][i])
{
check = 0;
break;
}
break;
}
} if (check == 1) {
printf("Matrix is symmetric.\n");
} else {
printf("Matrix is not symmetric.\n");
}
return 0;
}
}

#include<stdio.h>
#include <conio.h>
void main()

{
int check=0, number, i;

printf("Check whether a number is prime number or not. \n");

printf("Enter the number you would like to check: \n");
scanf("%d",&number);

for (int i=2; i<=number/2; ++i)

{
if (number%i == 0)
check = 1;
}

if (check==0 && number!=0 || number!=1)

{
printf("%d is a Prime Number.", number);
}
else
{
printf("%d is not a Prime Number", number);
}