#include <stdio.h>

    main()
    {
        int x;                        OUTPUT

        x = 354;
        printf("[%d]\n", x);          [354]
        printf("[%1d]\n", x);         [354]
        printf("[%2d]\n", x);         [354]
        printf("[%3d]\n", x);         [354]
        printf("[%4d]\n", x);         [ 354]
        printf("[%-4d]\n", x);        [354 ]
    }