#include <stdio.h>

int func(int a, int b) {
	printf("&a = %p\n", &a);
	a = a + b;
	return a;
}

int main() {

	int value = 10;
	int result;

	printf("prima vale: %d\n", value);
	printf("indirizzo = %p\n", &value);
	result = func(value, 10);
	printf("dopo vale: %d\n", value);
	printf("risultato: %d\n", result);

	printf("prima vale: %d\n", value);
	result = func(value, 15);
	printf("dopo vale: %d\n", value);
	printf("risultato: %d\n", result);

	return(0);
}

/*
 * The most straightforward way of passing parameters is "by value".
 *
 * When you pass a parameter by value, the function makes a local copy
 * of the variables that you passed.
 *
 * That is, inside a function you _cannot_ modify the value of variables
 * outside the function scope.
 *
 */

/*
 * This function takes two integer parameters.
 *
 * The value of the fist parameter is incremented by the value of the
 * second.
 *
 * The result of the sum is returned.
 */