gistfile1.c

// 根据用户掷色子的值，显示相应个数的星号*

#include <stdio.h>
void showone ();
void showtwo ();
void showthree ();
void showfour ();
void showfive ();
void showsix ();    // 色子数为1~6的情况分别以星号表示
int randn();  //随机摇出色子点数
char getans ();  // 根据用户的输入确定是否退出程序
void blines ();  //  输出回车
void main ()
{
	int r;
	char ans;
	ans = getans ();
	srand (17);
	while (ans = 'y')
	{
		r = randn (6);
		blines (2);
		switch (r)
		{
			case 1: showone (); break;
			case 2: showtwo (); break;
			case 3: showthree (); break;
			case 4: showfour (); break;
			case 5: showfive (); break;
			case 6: showsix (); break;
		}
		blines (2);
		ans = getans ();
	}
}
int randn (int n)
{
	return rand () % n + 1;
}
char getans ()
{
	int ans;
	printf ("Throw y/n?");
	ans = -1;
	while (ans == -1)
	{
		ans = getche ();
	}
	return ans;
}
void blines (int n)
{
	int i;
	for(i = 1; i <= n; i++)
	{
		printf("\n");
	}
}
void showone ()
{
	printf("\n*\n");
}
void showtwo ()
{
	printf("*\n");
	printf("*\n");
}
void showthree ()
{
	printf("*\n");
	printf("*\n");
	printf("*\n");
}
void showfour ()
{
	printf("**\n");
	printf("**\n");
}
void showfive ()
{
	printf("**\n");
	printf("*\n");
	printf("**\n");
}
void showsix ()
{
	int i;
	for(i = 1; i <=3; i++)
	{
		printf("**\n");
	}
}