#include<stdio.h>
#include<stdlib.h>
#include<time.h>//生成隨機函數起點時用到time.h
int main()
{
    int number1 = 0, choice = 0, number2 = 0;
    printf("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");//界面設置
    printf("$$$$$     歡          迎             來           到     $$$$$\n");
    printf("$$$$$          猜     數      字     遊      戲          $$$$$\n");
    printf("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");
    printf("                         1.進入遊戲\n");
    printf("                         2.退出遊戲\n");
    scanf("%d", &choice);
        srand((unsigned int)time(NULL));//設置隨機數起點
        while (choice == 1)
        {
            printf("請輸入所猜的數:\n");
            scanf("%d", &number2);
            number1 = rand() % 100;
            while (1)
            {

                if (number2 == number1)
                {
                    printf("666 恭喜你答對了！");
                    printf("\n1.再玩一次\n2.退出遊戲\n");
                    scanf("%d", &number2);
                    if (number2 == 1)
                        break;
                    if (number2 == 2)
                        return 0;
                }

                if (number2 < number1)
                {
                    printf("\n猜小了!\n");
                    scanf("%d", &number2);
                }
                if (number2 > number1)
                {
                    printf("\n猜大了!\n");
                    scanf("%d", &number2);
                }
            }
        }
    while(choice == 2)
    {
        return 0;
    }
    system("pause");
    return 0;
}
 

運行結果：

C語言編程 如何構建一個簡單的猜數字小遊戲