Write a menu based program in C addition, subtraction, multiplication, division using if else.

Write a menu based program in C addition, subtraction, multiplication, division using if else.

 #include<stdio.h>  
 #include<conio.h>  
 #include<stdlib.h>  
  void main()  
   {  
   int a,b,r,ch;  
   clrscr();  
   printf("\tMENU\n");  
   printf("1.Addition\n") ;  
   printf("2.Subtraction\n");  
   printf("3.Multiplication\n") ;  
   printf("4.Division\n");  
   printf("5.Exit\n");  
   printf("Enter choice number:-\n");  
   scanf("%d",&ch) ;  
   if(ch<1||ch>5)  
    printf("Wrong choice");  
   else  
   {  
   if(ch==1)  
    {  
    printf("Enter two no.:-");  
    scanf("%d%d",&a,&b);  
    r=a+b;  
    printf("Sum=%d",r);  
    }  
   if(ch==2)  
    {  
    printf("Enter two no.:-");  
    scanf("%d%d",&a,&b);  
    r=a-b;  
    printf("Sub=%d",r);  
    }  
   if(ch==3)  
    {  
    printf("Enter two no.:-");  
    scanf("%d%d",&a,&b) ;  
    r=a*b;  
    printf("Mul=%d",r);  
    }  
   if(ch==4)  
    {  
    printf("Enter two no.:-");  
    scanf("%d%d",&a,&b);  
    r=a/b;  
    printf("Div=%d",r) ;  
    }  
   if(ch==5)  
    exit(0);  
    }  
   getch();  
   }  

Output: