Header files in c++ (OOP) (37)

  /*Header files in c++

*********************/

/*the header files are the files with extension.h.it keep your code more organized.it allow you to

sperate interface for implementation.more managibility of large programm.there are two types of 

header files.

1.system header file

2.user define header files

                                        1.system header file

system header files  comes with the compiler.

                                        2.user define header files

user define header files written by the programmer.

 

 syntax:

            #include"hamza.h"*/

#include<iostream>

#include"hamza.h" //here i make a user define header file

using namespace std;

int main()

{

int a,b;

cout<<"please enter the first value:";

cin>>a;

cout<<"please enter the second value:";

cin>>b;

cout<<"sum is:"<<add(a,b)<<endl;

cout<<"sub is:"<<sub(a,b)<<endl;

cout<<"multi is:"<<mul(a,b)<<endl;

cout<<"div is:"<<div(a,b)<<endl;

}

                    //code of user define header file

int add(int x,int y)

{

return x+y;

}

int sub(int x, int y)

{

return x-y;

}

int mul(int x, int y)

{

return x*y;

}

int div(int x, int y)

{

return x/y;

}