xueji/1.c

#include <stdio.h>

void displayMenu() {
    printf("                                1. Input\n");
    printf("                                2. Output\n");
    printf("                                3. Order\n");
    printf("                                4. Quit\n");
}

char getUserChoice() {
    char choice;
    scanf(" %c", &choice);
    return choice;
}

int main() {
    char userChoice;

    while (1) {
        displayMenu();
        userChoice = getUserChoice();

        switch (userChoice) {
        case 'i':
            printf("You are trying to Input info\n");
            break;
        case 'o':
            printf("You are trying to Output info\n");
            break;
        case 'm':
            printf("You are trying to Make things ordered\n");
            break;
        case 'q':
            printf("You are about to Quit\n");
            return 0;
        default:
            printf("Wrong input\n");
            break;
        }
    }

    return 0;
}