prog0103-demo

#include "stdafx.h"

int _tmain(void)
{
    printf(":%s:\n", "Hello, world!");
    printf(":%15s:\n", "Hello, world!");
    printf(":%.10s:\n", "Hello, world!");
    printf(":%-10s:\n", "Hello, world!");
    printf(":%-15s:\n", "Hello, world!");
    printf(":%.15s:\n", "Hello, world!");
    printf(":%15.10s:\n", "Hello, world!");
    printf(":%-15.10s:\n", "Hello, world!");
}