#include<stdio.h>
int area(int l, int b); //Function Declaration
void main()
{
int var1 = 10;
int var2 = 20;
int var3 = area(var1, var2); //Function Call
/*
Here we are passing the stored value inside it to the function by writing the variable name.
*/
printf("Area of rectangle is : %d", var3);
}
int area(int l, int b) //Function Definition
{
int A = l*b;
return A;
}