source: soft/tp18/correction/main2.c @ 60

#include "stdio.h"

///////
int main2()
{
        int opx;
        int opy;

        tty_puts(" TASK 2 : PGCD \n");

        while (1)
    {
                tty_puts("\n*******************\n");
                tty_puts("operand X = ");
                tty_getw_irq(&opx);
                tty_printf("%d\n",opx);
                tty_printf("operand Y = ");
                tty_getw_irq(&opy);
                tty_printf("%d\n",opy);

                if( (opx < 1) || (opy < 1) )
        {
                        tty_puts("operands must be larger than 0\n");
                }
        else
        {
                        while (opx != opy)
            {
                                if(opx > opy)   opx = opx - opy;
                                else            opy = opy - opx;
                        }
                        tty_printf("pgcd = %d\n", opx);
                }
        }
        return 0;
} // end main2