How to Add two number in C++
Hello friends in this post I
am teach you how to add two number in C++.
#include<iostream.h>
#include<conio.h>
class add
{
public:
int a;
int b;
int c;
public:
void addition(void);
};
void
add::addition(void)
{
cout<<endl<<"please enter the value of a
and b:";
cin>>a>>b;
cout<<endl<<”a=”<<a;
cout<<endl<<”b=”<<b;
c=a+b;
cout<<endl<<"the sum of those numbers:-"<<c;
}
void main()
{
clrscr();
add A;
A.addition();
getch();
}
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The output of the program is given below.
In this program,
I am using class to add two number, we can also add two number without using class.my class_name is “add”.
class add {}
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We using three variable a, b, c and its publically defined in class datamember. where a, b is a number that you enter to add and c include result of this two number.
Public:
int a;
int b;
int c;
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In the class member function we create a function that include all instruction to add two number. my function name is “addition” and it is a void function and its arguments also void.
public:
void addition(void);
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We call the function outside of the class by using scope resolution operator ::
void add::addition(void) {}
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cout, The cout object in C++ is
an object of class iostream. It is used to display the output to the standard
output device i.e. monitor.
cin, The cin object in C++ is an object of class iostream. It is used to accept
the input from the standard input device i.e. keyboard.
In this function you can
see the use of cout and cin:-
void
add::addition(void)
{
cout<<endl<<"plese enter the value of
a and b:";
cin>>a>>b;
cout<<endl<<a;
cout<<endl<<b;
c=a+b;
cout<<endl<<"the sum of those
numbers:"<<c;
}
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And we using main function to call the class by using object of that class:-
void main()
{
clrscr();
add A;
//object created
A.addition();
//call the function by using object
getch();
}
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Output of the program:-
please enter the value of a and b: 12 13
a=12
b=13
the sum of those numbers:-25
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