C++ Program to add illustrate the concept of nesting of function

Program -


#include<iostream.h>

#include<conio.h>

class abc

               {

private:

int a,b,c;

public:

void read();

void write()

{

cout<<"\n sum of two no is:"<<sum();

}

int sum()

{

c=a+b;

return(c);

}

};

void abc::read()

{

cout<<"\n enter the value of a & b:";

cin>>a>>b;

}

void main()

{

class abc m1;

clrscr();

m1.read();

m1.write();

getch();

}

Output :

 enter the value of a & b:5 7

 sum of two no is:12