文件加密：

#include<stdio.h> #include<string.h> #include<stdlib.h>void code(char *s) {while(*s){(*s)++;s++;} }int main() {char s[1024] = {0};FILE *p = fopen("/home/exbot/wangqinghe/C/20190716/file.txt","r");FILE *p1 = fopen("/home/exbot/wangqinghe/C/20190716/b.txt","w");while(!feof(p)){memset(s,0,sizeof(s));fgets(s,sizeof(s),p);code(s);fputs(s,p1);}fclose(p);fclose(p1);return 0; }

文件解密：

#include<stdio.h> #include<string.h> #include<stdlib.h>void decode(char *s) {while(*s){(*s)--;s++;} }int main() {char s[1024] = {0};FILE *p = fopen("/home/exbot/wangqinghe/C/20190716/b.txt","r");FILE *p1 = fopen("/home/exbot/wangqinghe/C/20190716/a.txt","w");while(!feof(p)){memset(s,0,sizeof(s));fgets(s,sizeof(s),p);decode(s);fputs(s,p1);}fclose(p);fclose(p1);return 0; }

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轉載于:https://www.cnblogs.com/wanghao-boke/p/11196855.html

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