Loop a calculator program.

[lulzintosh]

So I found a program on the internet, I made a few changes to it here and there but now I want to loop it....

#include<stdio.h>
#include<stdlib.h>
void main()
{
    int a,b,res,ch;
    printf("\t   *********************");
    printf("\n\tMENU\n");
    printf("\t********************");
    printf("\n\t(1)ADDITION");
    printf("\n\t(2)SUBTRACTION");
    printf("\n\t(3)MULTIPLICATION");
    printf("\n\t(4)DIVISION");
    printf("\n\t(5)REMAINDER");
    printf("\n\t(0)EXIT");
    printf("\n\t********************");
    printf("\n\n\tEnter your choice:");
    scanf("%d",&ch);
    if(ch<=5 & ch>0)
    {
        printf("Enter two numbers:\n");
        scanf("%d%d",&a,&b);
    }
    switch(ch)
    {
        case 1:
        res=a+b;
        printf("\n Addition:%d",res);
        break;
        case 2:
        res=a-b;
        printf("\n Subtraction:%d",res);
        break;
        case 3:
        res=a*b;
        printf("\n Multiplication:%d",res);
        break;
        case 4:
        res=a/b;
        printf("\n Division:%d",res);
        break;
        case 5:
        res=a%b;
        printf("\n Remainder:%d",res);
        break;
        case 0:
        printf("\n Choice Terminated");
        exit(1);
        break;
        default:
        printf("\n Invalid Choice");
    }
}

Any one has any idea how it can be done?

[anduril462]

Find a program on the internet that does it . Just find it from a better source, one that at least knows the correct form of main (FAQ > main() / void main() / int main() / int main(void) / int main(int argc, char *argv[]) - Cprogramming.com). Seriously though, find some tutorials (we have one on our site for starters) and start reading them. Work through the examples. Learn about loops and try it yourself. Post your effort here, and we'll help, but we sure wont just write it for you. Especially since this sounds like a homework assignment (maybe it isn't in this case, but you did pick perhaps the most common programming assignment of all time).

[lulzintosh]

Find a program on the internet that does it . Just find it from a better source, one that at least knows the correct form of main (FAQ > main() / void main() / int main() / int main(void) / int main(int argc, char *argv[]) - Cprogramming.com). Seriously though, find some tutorials (we have one on our site for starters) and start reading them. Work through the examples. Learn about loops and try it yourself. Post your effort here, and we'll help, but we sure wont just write it for you. Especially since this sounds like a homework assignment (maybe it isn't in this case, but you did pick perhaps the most common programming assignment of all time).

But I want to know which loop I should be using....
If I know that then I will do the rest of the stuff

[kevinpaladin]

use do while loop

[anduril462]

A whole 5 minutes between my reply and yours. You didn't even bother looking for a tutorial on looping in C to go with code you didn't even bother writing yourself. It sounds like you want to put in as little effort as possible. We are here to help you learn, not hand out answers. Read the loop tutorial on this site, it's a few short paragraphs, and some useful examples. Try all 3 loop types, see if each is possible and which one(s) work better. Each one only involves a few simple lines of code. If you can't figure it out on your own, then show us you tried and we will help. Note, figure it out means you study and try it yourself, and ask us for help, not wholesale answers.

[lulzintosh]

Thanks for the help kevinpaladin.

A whole 5 minutes between my reply and yours. You didn't even bother looking for a tutorial on looping in C to go with code you didn't even bother writing yourself. It sounds like you want to put in as little effort as possible. We are here to help you learn, not hand out answers. Read the loop tutorial on this site, it's a few short paragraphs, and some useful examples. Try all 3 loop types, see if each is possible and which one(s) work better. Each one only involves a few simple lines of code. If you can't figure it out on your own, then show us you tried and we will help. Note, figure it out means you study and try it yourself, and ask us for help, not wholesale answers.

[edited by mod]
If you have nothing nice to say, say nothing...

[iMalc]

Spoonfeeding the answer like that leaves the poster having learnt next to nothing about why do..while is best here and when to use other loop types.

[stahta01]

Learn to use functions.
Put at least the menu display into a function.
Reason: It makes the code easier to read (and maintain) and it is good to learn to use/write functions in C at an early point.

Tim S.