Functions

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Functions


Function


When we classify our program into various functions, then our program becomes more readable and easier to understand.

Ques: Write a program in C++ to find the area of rectangle by using a function named as fun().
Solution:
void main()

{
fun(); //calling of function fun
}

void fun()
{
int l,b,area;
cin>>l;
cin>>b;
area = l*b;
cout<<area;
}

Output:
10
20
200

Passing arguments in function


The advantage of passing arguments or parameters in a function is that there is a communication of data from calling function to called function.

Ques: Write a program in C++ to find the area of rectangle by passing arguments in a function named as fun(int,int).
Solution:
void main()
{
fun(10,20); //10 and 20 are arguments of function fun
}
void fun(int l,int b)
{
int area;
area = l*b;
cout<<area;
}

Output:200

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