//fgetc()和fputc()#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>//文本写文件
int writeWord(const char *path,const char *pword){int ERRO_MSG = 0;int i = 0;if (path == NULL){ERRO_MSG = 1;printf("path==NULL erro msg:%d\n", ERRO_MSG);return ERRO_MSG;}if (pword == NULL){ERRO_MSG = 2;printf("pword==NULL erro msg:%d\n", ERRO_MSG);return ERRO_MSG;}//定义文件指针FILE *fpw=NULL;//打开文件fpw = fopen(path, "w");//w 打开只写文件，若文件存在，则文件长度清零，即文件内容会消失，若文件不存在则建立该文件//判断文件是否打开成功if (fpw==NULL){ERRO_MSG = 1;printf("文件打开失败 fpw==NULL erro msg:%d\n", ERRO_MSG);return ERRO_MSG;}//开始写文件for (i = 0; i < (int)strlen(pword)+1; i++){fputc(pword[i], fpw);}//fputs(pword, fpw);//关闭文件if (fpw!=NULL){fclose(fpw);}return ERRO_MSG;
}//文件读文件
int readtxt(const char *path,char *pout)//二级指针做输出
{int ERRO_MSG = 0;if (path==NULL){ERRO_MSG = 1;printf("path==NULL erro msg:%d\n", ERRO_MSG);return ERRO_MSG;}if (pout == NULL){ERRO_MSG = 2;printf("pout==NULL erro msg:%d\n", ERRO_MSG);return ERRO_MSG;}//定义文件指针FILE *pfr = NULL;//打开文件pfr = fopen(path, "r");if (pfr==NULL){ERRO_MSG = 3;printf("pfr==NULL erro msg:%d,文件路径：%s\n", ERRO_MSG, path);return ERRO_MSG;}//开始读文件int index = 0;//读文件while (!feof(pfr)){//feof()如果文件结束，则返回非0值，否则返回0//memset(pout, 0, sizeof(char)*200);pout[index++] = fgetc(pfr);}pout[index] = '\0';return ERRO_MSG;
}void main(){//定义文件路径char *path = "E:\\Test\\CwordTest\\";//只适用于windowchar *path1 = "E:/Test/CwordTest/a1.txt";writeWord(path1, "asfasdfasdgafdsgadf\r\nasdfadsadf\r\ndsafgshfetgrhet");//1.定义文件缓存数组char bufarr[200] = { 0 };readtxt(path1, bufarr);printf("%s\n", bufarr);system("pause");
}