19-2

#include <iostream.h>

double miyangin(int a, int b, int c);

void main(void)
{
	double m, n;
	int a = 4;

	m = miyangin(2, a,7);
	n = miyangin(1, 3, 6);
}

double miyangin(int a, int b, int c) {
	int tedad = 3;
	double miyan = a+b+c;
	miyan /= 3;
	return miyan;
}