完成猜数字游戏 //C语言 猜数字游戏（编写过程详解）

	int i, j, k;
	int num = 0;

	/*生成随机数字*/
	num = rand();
	printf("%d\n", num);

选择玩游戏还是退出

void play(int x)
{
	printf("%d\n", x);
	printf("开始游戏");
}
scanf("%d", &k);

	switch (k)
	{
	case 1:
		play(num);
		
	case 2:
		break;
	}

循环玩游戏程序

void play(int x)
{
	printf("%d\n", x);
	printf("开始游戏");




	printf("游戏结束");
}
int main()
{
	int i, j, k;
	int num = 0;

	/*生成随机数字*/
	num = rand();
	printf("%d\n", num);
	
again:
	{
		scanf("%d", &k);
		switch (k)
		{
		case 1:
			play(num);
			goto again;
		case 2:
			break;
		}
	}
	

书写玩游戏内部程序

void play(int x)
{
	int number=0;
	printf("请输入数字\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请选择\n\n");
	}
}

到这里游戏的整体框架编译完成，可以正常运行。但是我们发现每一次的数字都是41（或者其他固定数字）

/*
***猜数字游戏
*/


void play(int x)
{
	int number=0;
	printf("请输入数字\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请选择\n\n");
	}
}


int main()
{
	int i, j, k;
	int num = 0;


	/*生成随机数字*/
	num = rand();


again:
	{
		printf("开始游戏\n1.开始\n2.退出\n");
		scanf("%d", &k);
		switch (k)
		{
		case 1:
			play(num);
			goto again;
		case 2:
			break;
		}
	}




	system("pause");
	return 0;
}

关于<time.h>头文件

生成随机数字

	/*生成随机数字*/
	//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>
/*
***猜数字游戏
*/

void play(int x)
{
	int number=0;
	printf("请输入数字\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;

	/*生成随机数字*/
	//num = rand();
	srand(time(NULL));
	num = rand() % 100;

	

again:
	{
		printf("开始游戏\n1.开始\n2.退出\n");
		scanf("%d", &k);
		switch (k)
		{
		case 1:
			play(num);
			goto again;
		case 2:
			break;
		}
	}


	system("pause");
	return 0;
}

详细介绍的关于随机生成数字的解析

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