Contoh Menu C

//
//  main.c
//  contoh menu C
//
//  Created by Deni Rohimat on 11/11/16.
//  Copyright © 2016 Deni Rohimat. All rights reserved.
//

#include <stdio.h>

void sum() {
    float f1, f2;
    printf("Enter first number\n");
    scanf("%f",&f1);
    
    printf("Enter second  number\n");
    scanf("%f",&f2);
    float total;
    total = f1 + f2;
    printf("The result is %f \n", total);
    printf("Press key to go to the main menu\n\n");
    
}

void divided() {
    float f1, f2;
    printf("Enter first number\n");
    scanf("%f",&f1);
    
    printf("Enter second  number\n");
    scanf("%f",&f2);
    
    float total;
    total = f1 - f2;
    printf("The result is %f \n", total);
    printf("Press key to go to the main menu\n\n");
}


void printmenu(){
    
    int choice;
    do {
        printf("======================\n");
        printf("Menu\n\n");
        printf("1. Sum\n");
        printf("2. Divided\n");
        printf("3. Exit\n");
        
        printf("Choose menu : \n");
        
        scanf("%d",&choice);
        
        switch (choice)
        {
            case 1:
                sum();
                break;
            case   2:
                divided();
                break;
            case  3:
                printf("Goodbye\n");
                break;
            default: printf("Wrong Choice. Enter again\n");
                break;
        }
        
    } while (choice != 3);
    
}

int main(int argc, const char * argv[]) {
    printmenu();
    return 0;
}