Q1) write a program to impliment simple calculator?

Author: Sanif S S 

Site: theeduzone.blogspot.com 

Email: sanifss@gmail.com


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

void main()
{
 clrscr();
 int a,b,c,m,ch,n;
 printf("simple calculator\n");
 do
 {
  printf("main menu");
  printf("\n 1.addition \n 2.subtraction");
  printf("\n 3.multiplication \n 4.division\n");
  printf("enter your choice\n");
  scanf("%d",&ch);
  switch(ch)
   {
    case 1:
     printf("enter 2 no\n");
     scanf("%d %d",&a,&b);
     c=a+b;
     printf("sum=%d\n",c);
     break;
    case 2:
     printf("enter 2 no\n");
     scanf("%d %d",&a,&b);
     c=a-b;
     printf("difference=%d\n",c);
     break;
    case 3:
     printf("enter 2 no\n");
     scanf("%d %d",&a,&b);
     c=a*b;
     printf("product=%d\n",c);
     break;
   case 4:
     printf("enter 2 no\n");
     scanf("%d %d",&a,&b);
     if(b==0)
     {
      printf("division not possible\n");
     }
     else
     {
      c=a/b;
      printf("quotient=%d\n",c);
     }
     break;
    default:
      printf("invalid choice\n");
   }
  printf("if you wants to continue press 1 other wise press any key\n");
  scanf("%d",&n);
 }while(n==1);
  getch();
}