程序代码：

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define MAX 5

int x, z, i=0;
int guess(void);

int main(void)
{    
    srand((unsigned int)time(NULL));
    z = 1 + (int)(100.0 * rand() / (RAND_MAX + 1.0));
    printf("随机生成的数字: %d\n", z);
    printf("请输入你猜的数字:\n");
    do{
        scanf("%d", &x);
        if (x < 0)
        {
            printf("Game Over\n");
            exit(0);
        }
        guess();
    } while (x!=z);
    printf("猜了%d次\n", i);

    return 0;
}

int guess(void)
{
    if (i<=(MAX-1))
    {
        if (x==z)
        {
            switch (i+1)
            {
            case 1: printf("Bingo!\n");
                break;
            case 2: printf("Lucky You!\n");
                break;
            case 3: printf("Good Guess!\n");
                break;
            default: printf("You Win!\n");
            }
        }
        else if (x>z)
        {
            printf("Too big!\n");
        }
        else
        {
            printf("Too small!\n");
        }
    }
    else
    {
        printf("Game Over\n");
        exit(0);
    }
    return i++;
}