int i, j, k;int num = 0;/*生成隨機數字*/num = rand();printf("%d\n", num);

選擇玩游戲還是退出

void play(int x)
{printf("%d\n", x);printf("開始游戲");
}
scanf("%d", &k);switch (k){case 1:play(num);case 2:break;}

循環玩游戲程序

void play(int x)
{printf("%d\n", x);printf("開始游戲");printf("游戲結束");
}
int main()
{int i, j, k;int num = 0;/*生成隨機數字*/num = rand();printf("%d\n", num);again:{scanf("%d", &k);switch (k){case 1:play(num);goto again;case 2:break;}}

書寫玩游戲內部程序

void play(int x)
{int number=0;printf("請輸入數字\n");again_1:{scanf("%d", &number);while (number != x){if (number > x){printf("Big"); goto again_1;}else{printf("Small"); goto again_1;}}printf("Right\n請選擇\n\n");}
}

到這里游戲的整體框架編譯完成，可以正常運行。但是我們發現每一次的數字都是41（或者其他固定數字）

/*
***猜數字游戲
*/void play(int x)
{int number=0;printf("請輸入數字\n");again_1:{scanf("%d", &number);while (number != x){if (number > x){printf("Big"); goto again_1;}else{printf("Small"); goto again_1;}}printf("Right\n請選擇\n\n");}
}int main()
{int i, j, k;int num = 0;/*生成隨機數字*/num = rand();again:{printf("開始游戲\n1.開始\n2.退出\n");scanf("%d", &k);switch (k){case 1:play(num);goto again;case 2:break;}}system("pause");return 0;
}

關于<time.h>頭文件

生成隨機數字

	/*生成隨機數字*///num = rand();srand(time(NULL));num = rand() % 100

最后完成的程序

#define _CRT_SECURE_NO_WARNINGS 1 
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
/*
***猜數字游戲
*/void play(int x)
{int number=0;printf("請輸入數字\n");again_1:{scanf("%d", &number);while (number != x){if (number > x){printf("Big\n"); goto again_1;}else{printf("Small\n"); goto again_1;}}printf("\n***Right***\n *********\n   ******\n   ****\n    **\n");}
}int main()
{int k;int num = 0;/*生成隨機數字*///num = rand();srand(time(NULL));num = rand() % 100;again:{printf("開始游戲\n1.開始\n2.退出\n");scanf("%d", &k);switch (k){case 1:play(num);goto again;case 2:break;}}system("pause");return 0;
}

詳細介紹的關于隨機生成數字的解析

https://mp.csdn.net/postedit/79788815