说明

最近工作需要固定写死好几个随机码，自己想的又不够随机，所以搞了个随机码生成器[10位字母+数字]

rand10bit.cpp

#include "rand10bit.h"
#include "ui_rand10bit.h"
#include"time.h"
Rand10Bit::Rand10Bit(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Rand10Bit)
{
    
    
    ui->setupUi(this);
    this->setWindowTitle(QString::fromUtf8("10位字母+数值"));
    // 对Label可复制
    ui->rand10bitLabel->setTextInteractionFlags(Qt::TextSelectableByMouse);
}

Rand10Bit::~Rand10Bit()
{
    
    
    delete ui;
}

void Rand10Bit::on_createBtn_clicked()
{
    
    
    char chr[]={
    
    '0','1','2','3','4','5','6','7','8','9','0',
                'A','B','C','D','E','F','G','H','I','J','K',
                'L','M','N','O','P','Q','R','S','T','U','V',
                'W','X','Y','Z',
                'a','b','c','d','e','f','g','h','i','j','k',
                'l','m','n','o','p','q','r','s','t','u','v',
                'w','x','y','z'};
    srand((unsigned int)time(NULL));
    QString tempstring;
    char buf[10]={
    
    0};
    int idx=0;
    for(int i=0;i<10;i++)
    {
    
    
        idx=rand()%62;//chr[0-61]
        //sprintf_s(buf,"%c",chr[idx]);
        sprintf(buf,"%c",chr[idx]);
        tempstring.append(buf);
        if(7==i)//确保有数值
        {
    
    
            QRegExp regexp("[a-zA-Z]+[0-9]+");// 字母+数值
            if(regexp.exactMatch(tempstring)==false)
            {
    
    
                idx=rand()%10;//0-9
                sprintf(buf,"%c",chr[idx]);
                tempstring.append(buf);
                idx=rand()%52+10;//10-61
                sprintf(buf,"%c",chr[idx]);
                tempstring.append(buf);
                break;
            }
        }
    }
    ui->rand10bitLabel->setText(tempstring);
}

ui

结构

效果

文件

有道云：随机码生成器[10位字母+数字]