#include <stdio.h> // basic input output
//#pragma warning(disable: 4996) ////same use as below.  for integer input to disable warnings/issues.
#define _CRT_SECURE_NO_WARNINGS

/* Function for abs value */
int doSomeMath(int toDetermine) // declared as type int to return, int is used for input
{
	if (toDetermine < 0) // negative integer argument
	{
		return(toDetermine * -1);
	}
	else if (toDetermine > 0) // positive integer argument
	{
		return(toDetermine);
	}
	else // zero argument
	{
		return(0);
	}
}

/* Main */
void main() // declared as type void instead of int.  this is okay because this function doesn't need to return a result
{
	// variable for input, variable for output
	int userInt, userOut;

	// prompt the user
	printf("Please enter an integer: ");

	// get input from user
	scanf("%d", &userInt);

	// call the function
	userOut = doSomeMath(userInt);

	// print the results
	printf("\nThe absolute value of %d is %d\n\n", userInt, userOut);

}