1、首先打开VC++6.0
2、选择文件，新建
3、选择C++ source file 新建一个空白文档
4、声明头文件#include<衡痕贤伎stdio.h>#include<stdlib.h>
5、主函数#include&盟敢势袂lt;stdlib.h>int main(){FILE * sourcefile;FILE 忮氽阝另* keyfile;FILE * destfile;char ch,keych;int i;puts("****************************************");puts("* The file will encrypt the source.txt *");puts("****************************************");if(!(sourcefile = fopen("source.txt","r"))) { printf("Can not open the source file\n"); exit(-1); }if(!(destfile = fopen("destfile.txt","w+"))) { printf("Can not open the destination file\n"); exit(-1); }if(!(keyfile= fopen("keyfile.txt","w+"))) { printf("Can not open the keyfile file\n"); exit(-1); }printf("\n.....Encrypting....\n");i = 0;while(!feof(sourcefile)) { randomize();keych = random(112 - i) +16;ch = fgetc(sourcefile); ch = ch ^ keych; fputc(ch,destfile);fputc(keych,keyfile);i = ( ++i)%16; }printf("Encrypted the souce.txt successfully!\n");fclose(sourcefile);fclose(keyfile);fclose(destfile);getch();return 1;}
