Actual and Formal Parameters

User-defined Function:

User-defined is a function that is not part of a library but is defined by the user itself.


Actual Parameters:

Values that are passed to the called function from the main function are known as Actual parameters.

Actual parameters are also called "Arguments".


Formal Parameters:

The variables declared in the function prototype or definition are known as Formal parameters.


Example:

Actual parameters:

void main()

{

    int a=5, b=6;

    add(a, b);

}

Here "a" and "b" are actual parameters in the call add(a, b).


Formal parameters:

void add(int x, int y)

{

    printf("Addition is = %d",(x+y));

}

Here "x" and "y" are formal parameters in the statement void add(int x, int y).


When a method is called, the formal parameter is temporarily "bound" to the actual parameter.


Drafted on 🌏 by,

Jal



☮

peace


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