字符串非数字替换 C QString方式

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    //c方式

    char str[10];

    int i = 0;

    strcpy(str,"7!000");

    int len = strlen(str);

    qDebug()<<"str = "<<str;

    for(i = 0;i<len;i++)

    {

        if( ( str[i]>=0x30 ) && ( str[i]<=0x39 ))

        {

             continue;

        }

        else

        {

            str[i]=0x2E;

        }

    }

    qDebug()<<"str = "<<str;

    //QString 当成 char类型的数组一个一个判断

    QString tmp = "10r77";

    qDebug()<<"tmp = "<<tmp;

    for(i = 0;i<tmp.size();i++)

    {

    if( ( tmp[i]>=0x30 ) && ( tmp[i]<=0x39 ))

    {

    continue;

    }

    else

    {

    tmp[i]=0x2E;

    }

    }

    qDebug()<<"tmp = "<<tmp;

    //QString.replace+QRegExp 判断  

    QString tmp1 = "10r77";

    qDebug()<<"tmp1 = "<<tmp1;

    tmp1 = tmp1.replace(QRegExp("[^\\d+]"),".");

    qDebug()<<"tmp1 = "<<tmp1;

运行结果如下：

str = 7!000

str = 7.000

tmp = "10r77"

tmp = "10.77"

tmp1 = "10r77"

tmp1 = "10.77"