Как установить Qt SDK в Microsoft Windows

 #include 
 <QApplication> 
  
 #include 
 <QLabel> 
  
 #include 
 <QWidget> 
  
 #int main(int argc, char *argv[ ]) 
 { 
 QApplication 
 app 
 ( 
 argc 
 , 
 argv 
 ); 
 QLabel 
 hello 
 ( 
 "<center>Welcome to my first WikiHow Qt program</center>" 
 ); 
 hello 
 . 
 setWindowTitle 
 ( 
 "My First WikiHow Qt Program on Windows" 
 ); 
 hello 
 . 
 resize 
 ( 
 400 
 , 
 400 
 ); 
 hello 
 . 
 show 
 (); 
 return 
 app 
 . 
 exec 
 (); 
 } 

 #include 
 <QApplication> 
  
 #include 
 <QLabel> 
  
 #include 
 <QWidget> 
  
 #int main(int argc, char *argv[ ]) 
 { 
 QApplication 
 app 
 ( 
 argc 
 , 
 argv 
 ); 
 QLabel 
 hello 
 ( 
 "<center>Welcome to my first WikiHow Qt program</center>" 
 ); 
 hello 
 . 
 setWindowTitle 
 ( 
 "My First WikiHow Qt Program on Windows" 
 ); 
 hello 
 . 
 resize 
 ( 
 400 
 , 
 400 
 ); 
 hello 
 . 
 show 
 (); 
 return 
 app 
 . 
 exec 
 (); 
 } 

 TEMPLATE 
 = 
 app 
 TARGET 
 = 
 QtHelloWorld 
 #INCLUDEPATH += . 
 # Input 
 SOURCES 
 += 
 main 
 . 
 cpp 

 TEMPLATE 
 = 
 app 
 TARGET 
 = 
 QtHelloWorld 
 QT 
 += 
 core 
 gui 
 QT 
 += 
 widgets 
 #INCLUDEPATH += . 
 # Input 
 SOURCES 
 += 
 main 
 . 
 cpp