Int to string, int to qstring

1 int turn string

1.1 The flow of << Operator

//  The flow of  <<  Operator 
int a = 10;
stringstream ss;
ss << a;
string str = ss.str();

1.2 c++11 std::to_string

int a = 10;
std::string s = std::to_string(a);

2 string turn int

2.1 std::atoi

string _str = pSaveConfigElement->FirstChildElement("SaveVideoWidth")->GetText();
int mVideoWidth = std::atoi(_str);

3 int turn QString

3.1. Call directly QString::number()

int number = 10;
QString str = QString::number(number );

4 QString turn int

QString str = “10”;
int number = str.toInt();

5 QString turn string

QString str = “10”;
string stdStr= str.toStdString();

6 string turn QString

std::string _stdStr = "sfd";
QString _qStr(_stdStr.c_str());