#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

int main() {
    char choice[10];
    printf("                              1.Input\n");
    printf("                              2.Output\n");
    printf("                              3.Order\n");
    printf("                              4.Quit\n");
    scanf("%s", choice);
    // 将输入的字符转换为小写字母，方便后续判断
    for (int i = 0; i < strlen(choice); i++) {
        choice[i] = tolower(choice[i]);
    }

    if (strcmp(choice, "i") == 0) {
        printf("You are trying to Input info\n");
    } else if (strcmp(choice, "o") == 0) {
        printf("You are trying to Output info\n");
    } else if (strcmp(choice, "m") == 0) {
        printf("You are trying to Make things ordered\n");
    } else if (strcmp(choice, "q") == 0) {
        printf("You are about to Quit\n");
    } else {
        printf("Wrong input\n");
    }

    return 0;
}