#include <stdio.h>/* function declaration */int max(int num1, int num2);int main () {/* local variable definition */int a = 100;int b = 500;int ret;/* calling a function to get max value */ret = max(a, b);printf( "Max value is : %d\n", ret );return 0;}/* function returning the max between two numbers */int max(int num1, int num2) {/* local variable declaration */int result;if (num1 > num2)result = num1;elseresult = num2;return result;}