weixin_44374594的博客

//使用指针和malloc()#include <stdio.h>#include <stdlib.h>#include <string.h>#define LEN 40struct namect{ char *fname; char *lname; int letters;};char *s_gets(char *st, int n);void getinfo(struct namect *pst);void makeinf

#include <stdio.h>#include <string.h>#define MAXTITL 40#define MAXAUTL 40#define MAXBKS 100struct book{ char title[MAXTITL]; char author[MAXAUTL]; float value;};char *s_gets(char *st, int n){ char *ret_val; char *f

文件I/O函数fprintf()和fscanf()的工作方式与printf()和scanf()类似，区别在于前者第一个参数需要一个指定待处理的文件。#include <stdio.h>#include <stdlib.h>#include <string.h>#define MAX 41int main(void){ FILE *fp; char words[MAX]; if ((fp = fopen("wordy", "a+")

//reducto.c--把文件压缩成原来的1/3!#include <stdio.h>#include <stdlib.h> //提供exit()的原型#include <string.h> //提供strncpy()、strcat()的原型#define LEN 40int main(int argc, char *argv[]){ FILE *in, *out; //声明两个个指向FILE的指针 int ch; char name