calculater Programe in C

·         #include <stdio.h>

·         #include <conio.h>

·         int main ()

·         {

·          

·          char c;

·          int a, b, res,d;

·         printf("Select one of era-thematic operation "

"to perfume the following operations: \n+\n-\n*\n/\"

"nEnter you's choice: ");

scanf("%c",&c);

switch(c)

{

case '+' :

 printf("Enter 1st Number:");

 scanf("%d",&a);

 printf("\nEnter 2nd Number:");

 scanf("%d",&b);

 res=a+b;

 printf("%d + %d= %d",a,b,res);

break;

 case '-':

 printf("Enter 1st Number:");

    scanf("%d",&a);

 printf("\nEnter 2nd Number:");

 scanf("%d",&b);

 res=a-b;

 printf("%d - %d= %d",a,b,res);

break;

case '*':

 printf("Enter 1st Number:");

 scanf("%d",&a);

 printf("\nEnter 2nd Number:");

 scanf("%d",&b);

 res=a*b;

 printf("%d * %d= %d",a,b,res);

break;

case '/':

 printf("Enter 1st Number:");

 scanf("%d",&a);

 printf("\nEnter 2nd Number:");

 scanf("%d",&b);

 res=a/b;

 printf("%d / %d= %d",a,b,res);

break;

default:

  printf("Invalid Entry");

}

getch();

return 0;

}