BEGIN { if (WIDTH == 0) WIDTH = 100; if (HEIGHT == 0) HEIGHT = 100; printf("%d %d\n", WIDTH, HEIGHT); for (i = 0; i < WIDTH; ++i) printf("%f ", rand()); printf("\n"); for (j = 1; j < HEIGHT - 1; ++j) { printf("%f ", rand()); for (i = 1; i < WIDTH - 1; ++i) printf("0.0 "); printf("%f ", rand()); printf("\n"); } for (i = 0; i < WIDTH; ++i) printf("%f ", rand()); printf("\n"); }