#import <Foundation/Foundation.h>

// Funkcja obliczajca dowoln liczb trjktn

void calculateTriangularNumber (int n)
{
    int i, triangularNumber = 0;

    for ( i = 1; i <= n; ++i )
        triangularNumber += i;

    NSLog (@"Liczba trjktna nr %i to %i", n, triangularNumber);
}

int main (int argc, char *argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    calculateTriangularNumber (10);
    calculateTriangularNumber (20);
    calculateTriangularNumber (50);

    [pool drain];
    return 0;
}