c++亂數問題

allenwhale

這是你要的嗎?

[C++] 純文本查看 復制代碼

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
bool use[15]={false};
int gen1()
{
	int res;
	do
	{
		res=rand()%10;
	}while(use[res]);
	use[res]=true;
	return res;
}
char gen2()
{
	int r=rand()%4;
	if(r==0)return '+';
	else if(r==1)return '-';
	else if(r==2)return '*';
	else return '/';
}
int main()
{
	printf("%d %d %d %c %c\n",gen1(),gen1(),gen1(),gen2(),gen2());
}