猜数字游戏

#include 
#include 
#include 

void menu()
{
    printf("##########################n");
    printf("##  play:1  or  exit:0  ##n");
    printf("##########################n");
}

void game()
{
    int gruess;
    //firstly: generate a rander number;
    int ret=0;
    ret=rand()%100+1; //生产一个0~100的随机数
    //printf("%dn",ret);
    //gruessing number
    while(1)
    {
            printf("please output number:n");
            scanf("%d",&gruess);
            if(gruess>ret)
            {
                printf("the number is bign");
            }
            else if(gruess