Displays the product table for N varying from 1 to 10:

 X*Y I   0   1   2   3   4   5   6   7   8   9  10
--------------------------------------------------
  0  I   0   0   0   0   0   0   0   0   0   0   0
  1  I   0   1   2   3   4   5   6   7   8   9  10
  2  I   0   2   4   6   8  10  12  14  16  18  20
  3  I   0   3   6   9  12  15  18  21  24  27  30
  4  I   0   4   8  12  16  20  24  28  32  36  40
  5  I   0   5  10  15  20  25  30  35  40  45  50
  6  I   0   6  12  18  24  30  36  42  48  54  60
  7  I   0   7  14  21  28  35  42  49  56  63  70
  8  I   0   8  16  24  32  40  48  56  64  72  80
  9  I   0   9  18  27  36  45  54  63  72  81  90
 10  I   0  10  20  30  40  50  60  70  80  90 100

#include <stdio.h>
#include <conio.h>

void main()
{
	const int MAX = 10; /* number of lines and columns */
 	int I, J;

 	/* Display the header */
 	printf(" X*Y I");
 	for (J=0 ; J<=MAX ; J++)
        	printf("%4d", J);
 	printf("\n");
 	printf("------");
 	for (J=0 ; J<=MAX ; J++)
        	printf("----");
 	printf("\n");
 
 	/* Display the table */
 	for (I=0 ; I<=MAX ; I++)
      	{
       		printf("%3d  I", I);
       		for (J=0 ; J<=MAX ; J++)
            		printf("%4d", I*J);
       		printf("\n");
      	}
	getch();
}