C++ program to overload operator+ for string concatenation

//operator overloading for concatenating two strings in C++
#include<iostream>
using namespace std;
#include<string.h>

class sample
{
private:
char str[20];
public:
sample()
{
cout<<"def constructor."<<endl;
strcpy(str,"C++ Linux Code.");
}
sample(char s[])
{
cout<<"a arg constructor."<<endl;
strcpy(str,s);
}
sample operator+(const sample& ref )
{
cout<<"overloaded + called"<<endl;
sample temp;//def constructor
strcpy(temp.str,str);
strcat(temp.str,ref.str);
return temp;
}
//return *this;//seg fault
void display(){cout<<str<<endl;}
};
int main()
{
sample s1;//def constructor
s1.display();
sample s2("blogspot.com");//1 arg constructor
s2.display();
sample s3;//def constructor
s3=s1+s2;
s3.display();
//cout<<str<<endl;//str was not declared in this scope. As str is private and only mf can access
//cout<<s1.str<<endl;//aaa
//cout<<'m'<<endl;//a
return 0;
}
/*
def constructor.
C++ Linux Code.
a arg constructor.
blogspot.com
def constructor.
overloaded + called
def constructor.
C++ Linux Code.blogs
*/

Observer Design Pattern example in C++

Singleton Design Pattern example in C++

C++ program to overload operator+ for string concatenation

Copy constructor Overloaded assignment operator Destructor and default constructor implementation in C++

Purpose of run time Polymorphism in C++/CPP.

C Linux Code for user defined string routines strcmp strcpy strcat strrev strstr strlen