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char encrypt_decryption(char ch, char key)
{
return ch ^ key;
}
int main()
{
unsigned char key = 9;//密钥
char ch = getchar();
fflush(stdin);
printf_s("原文:%c\n",ch);
char encrypt_result = encrypt_decryption(ch, key);
printf_s("加密后结果:%c\n",encrypt_result);
char decryption_result = encrypt_decryption(encrypt_result,key);
printf_s("解密原文:%c", decryption_result);
return 0;
}