#include <stdio.h> #include <string.h> #define MAXTITL 41 #define MAXAUTL 31 struct book { /*结构模板，标记是 book */ char title[MAXTITL]; char author[MAXAUTL]; float value; }; char * s_gets(char *, int); int main() { struct book library; /* 把 library 声明为一个 book 类型的变量*/ printf("请输入书的标题：\n"); s_gets(library.title, MAXTITL); printf("现在输入书的作者姓名：\n"); s_gets(library.author, MAXAUTL); printf("现在输入书本的价格：\n"); scanf("%f", &library.value); printf("%s by %s: $%.2f\n", library.title, library.author, library.value); printf("%s: \"%s\"($%.2f)\n", library.author, library.title, library.value); printf("Done.\n"); return 0; } char * s_gets(char *st, int n) { char * ret_val; char * find; ret_val = fgets(st, n, stdin); if (ret_val) { find = strchr(st, '\n'); //查找换行符 if (find) //如果地址不是NULL *find = '\0'; //在此放置一个空字符 else while (getchar() != '\n') continue; //处理输入行中剩余的字符 } return ret_val; } /* output: 请输入书的标题： 我与地坛 现在输入书的作者姓名： 史铁生 现在输入书本的价格： 20 我与地坛 by 史铁生: $20.00 史铁生: "我与地坛"($20.00) Done. */