初學C語言【2】一個猜數字遊戲

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void menu()
{
    printf("***************************\n");
    printf("*******   1.play    *******\n");
    printf("*******   0.exit    *******\n");
    printf("***************************\n");
}
void game()
{
    int number = rand() % 100 + 1;
    int input = 0;
    while (1)
    {
        printf("請輸入猜的數字\n");
        scanf("%d", &input);
        if (input > number)
        {
            printf("提示！猜大了\n");
        }
        else if (input < number)
        {
            printf("提示！猜小了\n");
        }
        else
        {
            printf("恭喜你，猜對了");
            break;
        }
    }
}
int main()
{
    system("color 7F");//78
    int input = 0;
    srand((unsigned)time(NULL));
    do
    {

        menu();
        printf("請選擇->");
        scanf("%d", &input);
        switch(input)
        {
        case 1:game();
        case 0:break;
        dafult:printf("選擇錯誤，請從新選擇\n");
        }
    } while (input);
    return 0;
}