#include int main(void) { int i, j, n = 12; for (j = 1; j <= n; j++) printf("%3d%c", j, j != n ? ' ' : '\n'); for (j = 0; j <= n; j++) printf(j != n ? "----" : "+\n"); for (i = 1; i <= n; i++) { for (j = 1; j <= n; j++) printf(j < i ? " " : "%3d ", i * j); printf("| %d\n", i); } return 0; }