C语言 猜数字游戏

<span style="font-size:18px;">#include<stdio.h>#include<time.h>#include<stdlib.h>int main(){int a = 1;while(1){</span><span style="font-size:18px;">printf("******请选择******\n");printf("******1.play******\n");printf("******0.exit******\n");scanf("%d\n",&a);switch(a){case 1:{int num = 0;        int input = 0;        srand((unsigned)time(NULL));        num = rand()%100+1;while(1){printf("请输入1~100的数字:>");</span><span style="font-size:18px;">scanf("%d",&input);if(num==input){printf("猜对啦\n");break;}else if(num>input){printf("猜小啦\n");}if(num<input){printf("猜大啦\n");}}}case 0:{exit(0);}}}return 0;}</span>