#include <stdio.h>

int main() 
{
    int a, b, i, size;

    size=10;

    /* Write out heading line */
    printf("a+b| ");
	
    /* Any for loop of the form
    **  for(expr1; expr2; expr3) {
    **		stuff;
    **	}
    ** can be replaced by a while loop:
    **	expr1;
    **	while(expr2) {
    **		stuff;
    **		expr3;
    **	}
    */
    b=1;
    while(b <= size) {
        printf("%3d ", b);
	b++;
    }
    printf("\n");

    /* Write out separator line (dashes) */
    printf("---+-");
    i=1;
    while(i <= size*4) {
        printf("-");
	i++;
    }
    printf("\n");
    a=1;
    while(a <= size) {
        printf("%2d | ", a);
	b=1;
	while(b<= size) {
            printf("%3d ", a+b);
	    b++;
        }
        printf("\n");
	a++;
    }
    return 0;
}