fputc

#define  _CRT_SECURE_NO_WARNINGS#include <stdio.h>#include <string.h>#include <stdlib.h>int main(int argc, const char * argv[]) {    void fputc1();    fputc1();    return 0;}#pragma - 文件操作void fputc1(){    int i;    FILE *fp = NULL;    char *fname = "/Users/dajiahao-mac/Desktop/1.txt";//45°    fp = fopen(fname, "r+");//r+在原有文件前写入    if (fp==NULL) {        printf("fp open error\n");        return;    }    printf("打开成功\n");    char a[1024*3] = "Yan bao get up~ \n元宝起床了~";    for(i=0;i<strlen(a);i++){        fputc(a[i], fp);    }    fclose(fp);    return;}//1.txtYan bao get up~ 元宝起床了~//原来文件内容