c++ 生成随机数rand()函数的使用：设定范围

#include<iostream>
#include<sstream>
#include<fstream>
#include<string>
#include<stdlib.h>
#include<time.h>
#define random(x) (rand()%x)

int main(int args, char **argv)
{
    srand((int)time(0));
    for(int x=0;x<10;x++)
          printf("%d\n",random(5));
    return 0;
     
    

}

参考http://blog.youkuaiyun.com/beyond0824/article/details/6009908