我想创建一个简单的加密算法,但我还没有做到。当我运行这个程序时,它正在屏幕上打字
"Name: John Nash, Cryptioned Data: John Nash, Decryptioned Data: John Nash"
我该如何解决这个问题?我在哪里弄错了?
#include<stdio.h>
char *ecrypt(char data[]);
char *decrypt(char data[]);
int i; // Global variable...
void main(void)
{
char name[] = "John Nash",*data_encryptioned,*data_decryption;
data_encryptioned = ecrypt(name);
data_decryption = decrypt(data_encryptioned);
printf("Name: %s, Cryptioned Data: %s, Decryptioned Data: %s\n",name,data_encryptioned,data_decryption);
}
char *ecrypt(char data[])
{
for(i=0;data[i]!='\0';i++)
{
data[i]+=i+12;
}
return &data[0];
}
char *decrypt(char data[])
{
for(i=0;data[i]!='\0';i++)
{
data[i]-=(i+12);
}
return &data[0];
}
答案 0 :(得分:3)
在打印之前,您正在打印已加密和解密的缓冲区。因此要么制作加密字符串的副本,要么按步骤打印它们以查看过程:
printf("%s\n", name);
data_encryptioned = ecrypt(name);
printf("Cryptioned Data: %s\n",data_encryptioned);
data_decryption = decrypt(data_encryptioned);
printf("Decryptioned Data: %s\n",data_decryption);