简单的文件加密

#define  _CRT_SECURE_NO_WARNINGS//关闭安全检查#include<stdio.h>#include<stdlib.h>char jia(char ch){return ch + 1;//可以使用位加密return ch^523;}char jie(char ch){return ch - 1;//可以使用位解密return ch^523;}void jiami(char *path, char *pathjia){FILE *pfr, *pfw;pfr = fopen(path, "r");//读取pfw = fopen(pathjia, "w");//写入if (pfr == NULL || pfw == NULL){printf("失败");}else{while (!feof(pfr))//feof,文件结束返回1，否则返回0，前面加上!效果相反{char ch = fgetc(pfr);//读取字符putchar(ch);fputc(jia(ch), pfw);//写入加密字符}fclose(pfr);fclose(pfw);}}void jiemi(char *path, char *pathjie){FILE *pfw, *pfr;pfw = fopen(path, "r");pfr = fopen(pathjie, "w");if (pfr == NULL || pfw == NULL){printf("解密失败");}else{while (!feof(pfw)){char ch = fgetc(pfw);putchar(ch);fputc(jie(ch), pfr);}fclose(pfw);fclose(pfr);}}void main(){char *path = "C:\\Users\\snail\\Desktop\\1.txt";char *pathjia = "C:\\Users\\wh\\Desktop\\jiami.txt";char *pathjie = "C:\\Users\\wh\\Desktop\\jiemi.txt";jiami(path, pathjia);jiemi(pathjia, pathjie);system("pause");}