随机生成指定长度字符串

#include <iostream>#include <ctime>
using namespace std;

const int LEN = 62; // 26 + 26 + 10
char g_arrCharElem[LEN] = {'0', '1', '2',... 'A', 'B', 'C', ... 'a', 'b', 'c'};

int main()
{
    int iLen;
    cout << "输入要生成的字符串长度:/n";
    do
    {
        cin >> iLen;
    } while (iLen <= 0);
    char* szStr = new char[iLen + 1];
    szStr[iLen] = '/0';
    srand((unsigned)time(0));
    int iRand = 0;
    for (int i = 0; i < iLen; ++i)
    {
        iRand = rand() % LEN;            // iRand = 0 - 61
        szStr[i] = g_arrCharElem[iRand];
    }
    cout << "生成的随机字符串为:/n";
    cout << szStr << endl;
    delete[] szStr;
    return 0;
}