C Examples: Switch Statement

// SWITCH-STATEMENT EXAMPLE - C
// (c) gigabytemon
// 17/06/2020
// 2862 abc5 66cb a008 dbd9 5bf7 0dda 04f8
// e192 33e4 e689 4efb 24b9 d34f 6c2d 1ee1

/* introduction
 * ------------
 * switch statements are switches that take an input and perform a corresponding, pre-programmed output.
 * this input is called the SWITCH CASE.
 * this neat little statement lets you test an input to see if it is equal to a list of potential values.
 * these values are called CASES.
 * when the SWITCH CASE is found to be equal to one of the CASES, the statement will run its corresponding code as written in the CASE.
 */

/* syntax
 * ------
 * the syntax of a switch statement goes like this:
 *
 * int INPUT;               |       char INPUT;
 * switch (INPUT) {         |       switch (INPUT) {
 *      case 1:             |           case 'a':
 *          statements;     |               statements;
 *          break;          |               break;
 *      case 2:             |           case 'b':
 *          statements;     or              statements;
 *          break;          |               break;
 *      case 3:             |           case 'c':
 *          statements;     |               statements;
 *          break;          |               break;
 *          .               |               .
 *          .               |               .
 *          .               |               .
 *      default:            |           default:
 *          statements;     |               statements;
 *          break;          |               break;
 * }                                }
 */

/* personal notes
 * --------------
 * switch statements are excellent for menues, because you can clearly list and differentiate between expected inputs and outputs.
 * switches are basically advanced if-else comparators, where each if-else comparison can be simplified to a case.
 * p.s. yes, as with if-else, you can put a switch inside a switch, BUT DON'T DO THIS UNLESS YOU WANT TO LOOK LIKE A MONKEY DURING YOUR DEBUG PHASE
 */

#include <stdio.h>
int main()
{
    int input;

    //print menu
    printf("MENU\n");
    printf("1. Print out \"what's up, nibba\"\n");
    printf("2. Add 2 + 2\n");
    printf("3. Print ERROR 418\n");
    printf("0. EXIT\n");

    //loop until 0 or any number not on the menu is input
    do {
        printf("Please pick an option: ");
        scanf("%d", &input);

        switch(input) {
            case 1:
                printf("what's up, nibba\n");
                break;

            case 2:
                int sum = 2 + 2;
                printf("2 + 2 = %d\n", sum);
                break;

            case 3:
                printf("I am a teapot.\n");
                break;

            default:
                break;
        }
    } while (input != 0);

    printf("Thank you for using this menu.\n");


}