#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<time.h>
void do24();
void main() {
    int a,b,c,d,flg;
    char judge;
    srand((unsigned)time(NULL));
    do {
        printf("--------------------->\n");
        flg = 1;
        a = rand()%13+1;
        b = rand()%13+1;
        c = rand()%13+1;
        d = rand()%13+1;
        printf("a:%d b:%d c:%d d:%d\n",a,b,c,d);
        printf("Do you want to change the numbers 'Y OR N'\n");
        scanf("%c",&judge);
        if (judge == 'Y' || judge == 'y') {
            flg = 1;
        } else {
            flg = 0;
        }
    } while(flg == 1);
    do24();
}

void do24(){
    return;
}