产生随机字符数组的一种方法

代码贴上：

#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <iostream>

// using namespace std;

int main()
{
    const char *c = "0123456789abcdefghijklmnopqrstuvwxyz";

    srand(static_cast<unsigned int>(time(NULL)));
    std::cout << "The random char array is:";
    for(int i = 0; i < 5; ++i)
    {
        std::cout << std::endl;
        int index = 0 ;
        for(int j = 0; j < 5; ++j)
        {
            index = rand() % strlen(c);
            std::cout << c[index ]
        << c[index]
        << " ";
        }
    }
    std::cout << std::endl;
    return 0;
}

运行效果如下：

The random char array is:
00 qq 88 ii zz
qq bb oo 00 yy
rr yy tt ww ll
ss rr aa bb oo
11 yy tt 33 uu
请按任意键继续. . .