1   #include "myclass.h"
2   MyClass::MyClass(QObject *parent) : QObject(parent)
3   {
4     radius = 0;
5   }
6   void MyClass::calculate(){
7      area = radius * radius * 3.14;
8      perime = 2 * 3.14 * radius;
9      QString output, numStr1, numStr2;
10     numStr1 = QString::number(area);
11     numStr2 = QString::number(perime);
12     output = "Area is : " + numStr1;
13     output += "\n";
14     output += "Perimeter is : " + numStr2;
15     emit changedValues(output);
16  }
17  void MyClass::setRadius(int rad){
18      radius = rad;
19  }
