#include<stdio.

h>
#include<conio.h>
#include<string.h>
#include<math.h>
#include<stdlib.h>
void pass();
void menu();
void arithmatic();
void transpose();
void multiply();
void addsub();
void Quadratic();
void ratio();
void power();
void remainder();
void main()
{
{
pass();
}

n:
system("cls");
{
r1:
menu();
}
int a;
scanf("%d",&a);
if (a==1)
{
x9:
arithmatic();
printf("\nPress 1 to go back in main menu and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto x9;
}
}
else if(a==3)
{x10:
transpose();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;

}
else if (a11==2)
{
goto x10;
}

}
else if (a==4)
{
h1:
multiply();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h1;
}
}
else if (a==2)
{
h2:
addsub();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h2;
}
}
else if (a==5)
{
h3:

Quadratic();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h3;
}

}
else if (a==6)
{

h7:
ratio();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h7;
}

}
else if(a==7)
{

h13:
power();
printf("\nPress 1 to go back in main menue and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h13;
}
}
else if(a==8)
{
h26:
remainder();
printf("\nPress 1 to go ack in main menu and Press 2 to repeat same program:");
int a11;
scanf("%d", & a11);
if(a11==1)
{
goto r1;
}
else if (a11==2)
{
goto h26;
}
}
else
{ printf("You Pressed Wrong No.\nPlease press the correct Entry");

goto n;

getch();
}
void pass()
{ n:
char pwrd[]="uet";
char temp1[25] , temp2[25] , uname[]="uet" , ch;
int i=0;

//clrscr();
printf("Enter the username: ");
gets(temp1);
printf("Enter the password:");
while(1)
{
ch=getch();
// 1
if(ch==13)
// 2
break;
printf("*");
// 3
temp2[i++]=ch;
//4
}
temp2[i]='\0';
//5
if(!strcmp(uname,temp1)&&!strcmp(temp2,pwrd))
r:
//6
printf("\n\tWelcome to the CALCULATOR");
else
{ system("cls");
printf("\a\nPlease enter the correct username and password\n");
goto n;}
}
void menu()
{
{ printf(" \n\t\tHERE IT COMES !!!\n
THE WORLD'S BEST CALCULATOR!!\nSUBMITTED BY
:SYED MUEED ALI\nROLL NO. 14-ME-98\nSUBMITTED TO: SIR RIZWAN SAEED\n");}
{printf("For +,-,Mul,Divide:-\t \t\t Press 1\nFor addition and subtraction of matrices:- Press 2\nFor
Transpose of a matrix:-\t\t Press 3\nFor Multiplication of Matrices:-\t\t\b Press 4\n");}
{printf("For solving Quadratic Equations:-\t Press 5\nFor solving trigonometric functions:-\t
Press 6\nFor Power & Square Root function :-\t Press 7\n");}
{printf("For calculating Remainder:-\t\t Press 8\n");}
}
void arithmatic()

{
system("cls");
int lo;
int n;
int first, second, add, subtract, multiply;
float divide;
printf("Enter two integers\n");
scanf("%d%d", &first, &second);
printf("For Addition :-\t\t Press 1\nFor Subtraction :- \t\b Press 2\nFor Multiplication :-\t\b\b
Press 3\nFor Division :-\t\t Press 4\n");
scanf("%d",&lo);
add
= first + second;
subtract = first - second;
multiply = first * second;
divide
= first / (float)second;
if (lo==1)
{
printf("Sum = %d\n",add);

}
else if (lo==2)
{
printf("Difference = %d\n",subtract);
}
else if (lo==3)
{
printf("Multiplication = %d\n",multiply);
}
else if (lo==4)
{
printf("Division = %.2f\n",divide);
}

}
void transpose()
{

system("cls");
int g;

int i, j, k,m,n;
int s=0;
int a[200][200], b[200][200], p[200][200];
printf("Enter no of rows and column of matrix\n");
printf("Rows:");
scanf(" %d",&m);
printf("Columns:");
scanf("%d",&n);
printf("Enter the elements of matrix\n");
for ( i = 0 ; i < m ; i++ )
for ( j = 0 ; j < n ; j++ )
scanf("%d", &a[i][j]);
printf("Original matrix is:\n");
for ( i = 0 ; i < m ; i++ )
{
for ( j = 0 ; j < n ; j++ )
{
printf("%d\t", a[i][j]);
}
printf("\n");
}
printf("Transpose of a matrix is\n");
for (i=0;i<m;i++)
{
for (j=0;j<n;j++)
{
printf("%d\t",a[j][i]);
}
printf("\n");
}

}
void multiply()
{
system("cls");
int g;
int i, j, k,m,n;
int s=0;
int a[200][200], b[200][200], p[200][200];
printf("Enter no of rows and column of 1st matrix\n");
scanf("%d",&m);
scanf("%d",&n);
printf("Enter no of rows and columns of 2nd matrix\n");
scanf("%d",&m);
scanf("%d",&n);
printf("Enter the elements of first matrix\n");
for ( i = 0 ; i < m ; i++ )
for ( j = 0 ; j < n ; j++ )
scanf("%d", &a[i][j]);
printf("Enter the elements of second matrix\n");
for ( i = 0 ; i < m ; i++ )
for ( j = 0 ; j < n ; j++ )
scanf("%d", &b[i][j]);
for ( i = 0 ; i < m ; i++ )
{
for ( j = 0 ; j < n ; j++ )
{
for ( k = 0 ; k < m ; k++ )
{
s = s + a[i][k]*b[k][j];
}
p[i][j] = s;
s = 0;
}
}
printf("Product of entered matrices:-\n");
for ( i = 0 ; i < m ; i++ )
{
for ( j = 0 ; j < n ; j++ )
printf("%d\t", p[i][j]);
printf("\n");
}
}
void addsub()
{

system("cls");
int n;

int a1[3][3],a2[3][3],a3[3][3];
int i, j,k;
printf(" *Enter 3X3 Matrices*\n");
printf("Enter values for first matrix:\n");
for(i=0;i<=2;i=i+1)

for(j=0;j<=2;j=j+1)
{
scanf("%d",&a1[i][j]);
}
}
printf("\nEnter the values for second matrix:\n");
for(i=0;i<=2;i=i+1)
{
for(j=0;j<=2;j=j+1)
{
scanf("%d",&a2[i][j]);
}
}
printf("For Addition:- Press 1\nFor Subtraction:-Press 2\n");
scanf("%d",&k);
if (k==1)
{
printf("find the sum of two matrices\n");
for(i=0;i<=2;i=i+1)
{
for(j=0;j<=2;j=j+1)
{
a3[i][j]=a1[i][j]+a2[i][j];
}
}
for(i=0;i<=2;i=i+1)
{
for(j=0;j<=2;j=j+1)
{
printf("%d\t",a3[i][j]);
}
printf("\n");
}
}
else if(k==2)
{
printf("\nfind the difference of two matrices\n");
for(i=0;i<=2;i=i+1)
{
for(j=0;j<=2;j=j+1)
{
a3[i][j]=a1[i][j]-a2[i][j];
}
}
for(i=0;i<=2;i=i+1)
{
for(j=0;j<=2;j=j+1)
{
printf("%d\t",a3[i][j]);
}
printf("\n");
}

}
}
void Quadratic()
{
system("cls");
int n;
float a1,a2,a3;
char b1,b2,b3,b4,b5,b6,b7,b8;
float x1,x2;
printf("Enter your equatio in this formate \n a*x*x+b*x+c\n");
scanf("%f %c %c %c %c %c %f %c %c %c %f",
&a1,&b1,&b2,&b3,&b4,&b5,&a2,&b6,&b7,&b8,&a3);
if(a1==0)
{
printf("Invalid Equation");
}
else
{
x1=(((-1)*(a2))+ sqrt((a2*a2)-(4*a1*a3)))/(2*a1);
x2=(((-1)*(a2))- sqrt((a2*a2)-(4*a1*a3)))/(2*a1);
printf("%c=%f and %c=%f",b2,x1,b2,x2);
}
}
void ratio()
{
system("cls");
int n;
printf("Press 1.sin 2.cos 3.tan 4.sec 5.cosec 6.cot 7.sinh 8.cosh 9.tanh 10.cosech 11.sech
12.coth\n");
int a1;
scanf("%d",&a1);
printf("Enter your value of Angle in Degrees:-");
int a;
scanf("%d",&a);
switch (a1)
{
case 1:
printf("=%f", sin(a*3.147/180));
break;
case 2:
printf("=%f", cos(a*3.147/180));
break;
case 3:
printf("=%f", tan(a*3.147/180));
break;
case 4:
printf("=%f", 1/sin(a*3.147/180));
break;
case 5:
printf("=%f", 1/cos(a*3.147/180));
break;
case 6:
printf("=%f", 1/tan(a*3.147/180));

case 7:

break;
printf("=%f", sinh(a*3.147/180));
break;

case 8:
case 9:

printf("=%f", cosh(a*3.147/180));
break;
printf("=%f", tanh(a*3.147/180));
break;

case 10:
case 11:

printf("=%f", 1/sinh(a*3.147/180));
break;
printf("=%f", 1/cosh(a*3.147/180));
break;

case 12:

printf("=%f", tanh(a*3.147/180));
break;
default:
printf("Invalid Operation");
break;

}
}
void power()
{
system("cls");
int n;
printf("For Power:- Press 1\nSuqare Root:-Press 2\n");
int a;
scanf("%d",&a);
if(a==1)
{
int c;
float b;
printf("Enter your numbers for Power function\n");
scanf("%f %d",&b,&c);
printf("Power of Number is:");
printf("=%f",pow(b,c));
}
else if(a==2)
{
float b;
printf("Enter your number for Square Root Function:");
scanf("%f", &b);
printf("\nSquare Root of a number is:");
printf("%f", sqrt(b));
}
else
{
printf("Invalid Operation");
}
}
void remainder()
{

system("cls");
int a,b,c;
int n;
printf("Enter No. whose remainder is to calculate:");
scanf("%d",&a);
printf("Enter the Devisor:");
scanf("%d",&b);
c=a%b;
printf("Your reminder = %d",c);
}