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# AHF    C    PROGRAM    SOLVING

### Summation, Subtraction, Multiplication and division

```
// AHF C PROGRAM SOLVING

//solving here basic type of programming problem

#include<stdio.h>
#include<math.h>
#include<stdlib.h>
#define pf printf

int main()
{
int choice;

while(1){

pf("\nEnter 1 for summation  ");
pf("\nEnter 2 for subtraction  ");
pf("\nEnter 3 for multiplication  ");
pf("\nEnter 4 for division .......... ");
pf("\nEnter 5 to Exit .......... ");
scanf("%d",&choice);

switch(choice)
{
case 1:
{
int x,y,sum=0;
pf("\nEnter first and second number: ");
scanf("%d %d",&x,&y);
sum=x+y;
pf("\nThe summation = %d",sum);
}
break;

case 2:
{
int x,y,sub=0;
pf("\nEnter first and second number: ");
scanf("%d %d",&x,&y);
sub=x-y;
pf("\nThe summation = %d",sub);
}
break;

case 3:
{
int x,y,mul=0;
pf("\nEnter first and second number: ");
scanf("%d %d",&x,&y);
mul=x*y;
pf("\nThe summation = %d",mul);
}
break;

case 4:
{
float x,y,div=0;
pf("\nEnter first and second number: ");
scanf("%f %f",&x,&y);
div=x/y;
pf("\nThe summation = %f",div);
}
break;

case 5: exit(1);

default : pf("\nInvalid Input.");
}
}

return 0;
}

```
OUTPUT: