PedF UK - OKB1319205 Ukol3

#include <iostream>

 /**
  * Draws ASCII plus sign of given size from given char.
  *
  * @param size Size of the plus sign to be drawn.
  * @param c Char to use for plus sign drawing.
  */
void drawPlus ( int size, char c )
 {
    for ( int i = 0; i < size; ++i ) // loop for columns
     {
        for ( int j = 0; j < size; ++j ) // loop for rows
         {
            if ( i == size / 2 ) // do not print anything in the middle row as it is special
                continue;

            if ( j == size / 2 )
                std::cout << c << "   ";
            else
                std::cout << "    ";
         }

        if ( i == size / 2 )    // special middle row
         {
            for ( int k = 0; k < size; ++k )
                std::cout << c << "   ";
            std::cout << std::endl << std::endl;
         }
        else
            std::cout << std::endl << std::endl;
     }
 }

 /**
  * Program reads one odd number from user and then prints ASCII plus sign.
  *
  * @return Returns 1 if wrong input is detected, 0 if everything ok.
  * @author Michael Hartman [email protected]
  */
int main ( int argc, char ** argv )
 {
    std::cout << "Enter odd number: ";
    int num;
    if ( ! ( std::cin >> num ) || ! ( num % 2 ) || num < 0 )
     {
        std::cerr << "Wrong input!" << std::endl;
        return 1;
     }

    drawPlus( num, '*' );
    return 0;
 }