#include <stdio.h>
int main(void)
{
 int first_name_width,second_name_width;
 char first_name[20];
 char second_name[30];
 printf("please enter your second name;\n");
 scanf("%s",second_name);
 printf("please enter your first name;\n");
 scanf("%s",first_name);
 printf("please enter your first name width and second name width:\n");
 scanf("%d,%d",&first_name_width,&second_name_width);
 printf("%s %s\n",first_name,second_name);
 printf("%*d %*d\n",first_name_width,strlen(first_name),
 second_name_width,strlen(second_name));
 printf("%s %s\n",first_name,second_name);
 printf("%-*d %-*d",first_name_width,strlen(first_name),
 second_name_width,strlen(second_name));
 getch();
}
输出形式：