C PROGRAM ASSIGNMENT
Contents
1. Write a program to find the multiplication of two matrices.3
2. Write a program to check whether input alphabet is a vowel or not..................................4
3. Write a program to check leap year....................................................................................5
4. Write a program to find factorial using for loop.................................................................5
5. Write a program to find hcf and lcm ..................................................................................6
6. Write a program to convert decimal to binary....................................................................7
7. Write a program to swap two numbers...............................................................................7
8. Write a program to reverse a number..................................................................................8
9. Write a program to print diamond pattern..........................................................................9
10. Write a program to find fibonacci series.......................................................................10
11. Write a program for addition of two numbers using pointers.......................................11
12. Write a program to find maximum or largest element present in an array....................11
13. Write a program to reverse an array..............................................................................12
14. Write a program to add two matrices............................................................................13
15. Write a program to transpose of a matrix......................................................................14
16. Write a program to prints length of string.....................................................................15
17. Write a program to remove spaces or excess blanks from a string...............................16
18. Write a program add two complex numbers.................................................................17
19. Write a program to swap strings....................................................................................18
20. Write a program to delete an element from an array.....................................................19
1
1. Write a program to find the multiplication of two matrices.
Program
#include <stdio.h>
int main()
{
int m, n, p, q, c, d, k, sum = 0;
int first[10][10], second[10][10], multiply[10][10];
printf("Enter the number of rows and columns of first matrix\n");
scanf("%d%d", &m, &n);
printf("Enter the elements of first matrix\n");
for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &first[c][d]);
printf("Enter the number of rows and columns of second matrix\n");
scanf("%d%d", &p, &q);
if (n != p)
printf("Matrices with entered orders can't be multiplied with each other.\n");
else
{
printf("Enter the elements of second matrix\n");
for (c = 0; c < p; c++)
for (d = 0; d < q; d++)
scanf("%d", &second[c][d]);
for (c = 0; c < m; c++) {
for (d = 0; d < q; d++) {
for (k = 0; k < p; k++) {
sum = sum + first[c][k]*second[k][d];
}
multiply[c][d] = sum;
sum = 0;
}
}
printf("Product of entered matrices:-\n");
for (c = 0; c < m; c++) {
2
for (d = 0; d < q; d++)
printf("%d\t", multiply[c][d]);
printf("\n");
}
}
return 0;
}
Output
2. Write a program to check whether input alphabet is a vowel or not.
Program
#include <stdio.h>
int main()
{
char ch;
printf("Enter a character\n");
scanf("%c", &ch);
if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' ||
ch == 'u' || ch == 'U')
printf("%c is a vowel.\n", ch);
else
printf("%c is not a vowel.\n", ch);
3
return 0;
}
Output
3. Write a program to check leap year.
Program
#include <stdio.h>
int main()
{
int year;
printf("Enter a year to check if it is a leap year\n");
scanf("%d", &year);
if ( year%400 == 0)
printf("%d is a leap year.\n", year);
else if ( year%100 == 0)
printf("%d is not a leap year.\n", year);
else if ( year%4 == 0 )
printf("%d is a leap year.\n", year);
else
printf("%d is not a leap year.\n", year);
return 0;
}
Output
4
4. Write a program to find factorial using for loop.
Program
#include <stdio.h>
int main()
{
int c, n, fact = 1;
printf("Enter a number to calculate it's factorial\n");
scanf("%d", &n);
for (c = 1; c <= n; c++)
fact = fact * c;
printf("Factorial of %d = %d\n", n, fact);
return 0;
}
Output
5. Write a program to find hcf and lcm .
Program
#include <stdio.h>
int main() {
int a, b, x, y, t, gcd, lcm;
printf("Enter two integers\n");
scanf("%d%d", &x, &y);
a = x;
b = y;
while (b != 0) {
t = b;
b = a % b;
a = t;
}
5
gcd = a;
lcm = (x*y)/gcd;
printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
printf("Least common multiple of %d and %d = %d\n", x, y, lcm);
return 0;
}
Output
6. Write a program to convert decimal to binary.
Program
#include <stdio.h>
int main()
{
int n, c, k;
printf("Enter an integer in decimal number system\n");
scanf("%d", &n);
printf("%d in binary number system is:\n", n);
for (c = 31; c >= 0; c--)
{
k = n >> c;
if (k & 1)
printf("1");
else
printf("0");
}
printf("\n");
return 0;
}
Output
6
7. Write a program to swap two numbers.
Program
#include <stdio.h>
int main()
{
int x, y, temp;
printf("Enter the value of x and y\n");
scanf("%d%d", &x, &y);
printf("Before Swapping\nx = %d\ny = %d\n",x,y);
temp = x;
x = y;
y = temp;
printf("After Swapping\nx = %d\ny = %d\n",x,y);
return 0;
}
Output
8. Write a program to reverse a number.
Program
#include <stdio.h>
int main()
{
int n, reverse = 0;
printf("Enter a number to reverse\n");
7
scanf("%d", &n);
while (n != 0)
{
reverse = reverse * 10;
reverse = reverse + n%10;
n = n/10;
}
printf("Reverse of entered number is = %d\n", reverse);
return 0;
}
Output
9. Write a program to print diamond pattern.
Program
#include <stdio.h>
int main()
{
int n, c, k, space = 1;
printf("Enter number of rows\n");
scanf("%d", &n);
space = n - 1;
for (k = 1; k <= n; k++)
{
for (c = 1; c <= space; c++)
printf(" ");
space--;
for (c = 1; c <= 2*k-1; c++)
printf("*");
printf("\n");
}
8
space = 1;
for (k = 1; k <= n - 1; k++)
{
for (c = 1; c <= space; c++)
printf(" ");
space++;
for (c = 1 ; c <= 2*(n-k)-1; c++)
printf("*");
printf("\n");
}
return 0;
}
Output
10. Write a program to find fibonacci series.
Program
#include<stdio.h>
int main()
{
int n, first = 0, second = 1, next, c;
printf("Enter the number of terms\n");
scanf("%d",&n);
9
printf("First %d terms of Fibonacci series are :-\n",n);
for ( c = 0 ; c < n ; c++ )
{
if ( c <= 1 )
next = c;
else
{
next = first + second;
first = second;
second = next;
}
printf("%d\n",next);
}
return 0;
}
Output
11. Write a program for addition of two numbers using pointers.
Program
#include <stdio.h>
int main()
{
int first, second, *p, *q, sum;
printf("Enter two integers to add\n");
scanf("%d%d", &first, &second);
p = &first;
q = &second;
sum = *p + *q;
10
printf("Sum of entered numbers = %d\n",sum);
return 0;
}
Output
12. Write a program to find maximum or largest element present in an
array.
Program
#include <stdio.h>
int main()
{
int array[100], maximum, size, c, location = 1;
printf("Enter the number of elements in array\n");
scanf("%d", &size);
printf("Enter %d integers\n", size);
for (c = 0; c < size; c++)
scanf("%d", &array[c]);
maximum = array[0];
for (c = 1; c < size; c++)
{
if (array[c] > maximum)
{
maximum = array[c];
location = c+1;
}
}
printf("Maximum element is present at location %d and it's value is %d.\n", location,
maximum);
return 0;
}
11
Output
13. Write a program to reverse an array.
Program
#include <stdio.h>
int main()
{
int n, c, d, a[100], b[100];
printf("Enter the number of elements in array\n");
scanf("%d", &n);
printf("Enter the array elements\n");
for (c = 0; c < n ; c++)
scanf("%d", &a[c]);
for (c = n - 1, d = 0; c >= 0; c--, d++)
b[d] = a[c];
for (c = 0; c < n; c++)
a[c] = b[c];
printf("Reverse array is\n");
for (c = 0; c < n; c++)
printf("%d\n", a[c]);
return 0;
}
Output
12
14. Write a program to add two matrices.
Program
#include <stdio.h>
int main()
{
int m, n, c, d, first[10][10], second[10][10], sum[10][10];
printf("Enter the number of rows and columns of matrix\n");
scanf("%d%d", &m, &n);
printf("Enter the elements of first matrix\n");
for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &first[c][d]);
printf("Enter the elements of second matrix\n");
for (c = 0; c < m; c++)
for (d = 0 ; d < n; d++)
scanf("%d", &second[c][d]);
printf("Sum of entered matrices:-\n");
for (c = 0; c < m; c++) {
for (d = 0 ; d < n; d++) {
sum[c][d] = first[c][d] + second[c][d];
printf("%d\t", sum[c][d]);
}
printf("\n");
}
return 0;
}
13
Output
15. Write a program to transpose of a matrix.
Program
#include <stdio.h>
int main()
{
int m, n, c, d, matrix[10][10], transpose[10][10];
printf("Enter the number of rows and columns of matrix\n");
scanf("%d%d", &m, &n);
printf("Enter the elements of matrix\n");
for (c = 0; c < m; c++)
for(d = 0; d < n; d++)
scanf("%d",&matrix[c][d]);
for (c = 0; c < m; c++)
for( d = 0 ; d < n ; d++ )
transpose[d][c] = matrix[c][d];
printf("Transpose of entered matrix :-\n");
for (c = 0; c < n; c++) {
for (d = 0; d < m; d++)
printf("%d\t",transpose[c][d]);
printf("\n");
}
return 0;
}
14
Output
16. Write a program to prints length of string.
Program
#include <stdio.h>
#include <string.h>
int main()
{
char a[100];
int length;
printf("Enter a string to calculate it's length\n");
gets(a);
length = strlen(a);
printf("Length of entered string is = %d\n",length);
return 0;
}
Output
17. Write a program to remove spaces or excess blanks from a string.
Program
#include <stdio.h>
int main()
15
{
char text[1000], blank[1000];
int c = 0, d = 0;
printf("Enter some text\n");
gets(text);
while (text[c] != '\0') {
if (text[c] == ' ') {
int temp = c + 1;
if (text[temp] != '\0') {
while (text[temp] == ' ' && text[temp] != '\0') {
if (text[temp] == ' ') {
c++;
}
temp++;
}
}
}
blank[d] = text[c];
c++;
d++;
}
blank[d] = '\0';
printf("Text after removing blanks\n%s\n", blank);
return 0;
}
Output
18. Write a program add two complex numbers.
Program
#include <stdio.h>
struct complex
{
16
int real, img;
};
int main()
{
struct complex a, b, c;
printf("Enter a and b where a + ib is the first complex number.\n");
printf("a = ");
scanf("%d", &a.real);
printf("b = ");
scanf("%d", &a.img);
printf("Enter c and d where c + id is the second complex number.\n");
printf("c = ");
scanf("%d", &b.real);
printf("d = ");
scanf("%d", &b.img);
c.real = a.real + b.real;
c.img = a.img + b.img;
if ( c.img >= 0 )
printf("Sum of two complex numbers = %d + %di\n", c.real, c.img);
else
printf("Sum of two complex numbers = %d %di\n", c.real, c.img);
return 0;
}
Output
19. Write a program to swap strings.
Program
#include <stdio.h>
#include <string.h>
17
#include <malloc.h>
int main()
{
char first[100], second[100], *temp;
printf("Enter the first string\n");
gets(first);
printf("Enter the second string\n");
gets(second);
printf("\nBefore Swapping\n");
printf("First string: %s\n",first);
printf("Second string: %s\n\n",second);
temp = (char*)malloc(100);
strcpy(temp,first);
strcpy(first,second);
strcpy(second,temp);
printf("After Swapping\n");
printf("First string: %s\n",first);
printf("Second string: %s\n",second);
return 0;
}
Output
18
20. Write a program to delete an element from an array.
Program
#include <stdio.h>
int main()
{
int array[100], position, c, n;
printf("Enter number of elements in array\n");
scanf("%d", &n);
printf("Enter %d elements\n", n);
for ( c = 0 ; c < n ; c++ )
scanf("%d", &array[c]);
printf("Enter the location where you wish to delete element\n");
scanf("%d", &position);
if ( position >= n+1 )
printf("Deletion not possible.\n");
else
{
for ( c = position - 1 ; c < n - 1 ; c++ )
array[c] = array[c+1];
printf("Resultant array is\n");
for( c = 0 ; c < n - 1 ; c++ )
printf("%d\n", array[c]);
}
return 0;
}
Output
19
20
