我试图编码一个简单的base64编码器/解码器(测试我的编程技巧)。我在做什么错?,在C++中链接
我可以编译它,但它不会链接,我有此消息错误:
C:\Documents and Settings\Facon\Escritorio>g++ base64.o main.o -o prueba.exe
main.o:main.cpp:(.text+0x24a): undefined reference to `Base64Encode(std::vector > const&)'
collect2: ld returned 1 exit status
编译&链接:MINGW32 3.4.5 SO:Windows XP中
这是我的源代码:
base64.h:
#ifndef BASE64_H
#define BASE64_H
#include <iostream>
#include <vector>
typedef unsigned char byte;
std::string Base64Encode(const std::vector<byte> &array);
std::vector<byte> Base64Decode(const std::string &array);
#endif
base64.cpp:
#include "base64.h"
std::string Base64Encode(std::vector<byte> &array)
{
const char *base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz/";
const unsigned int size = array.size();
std::string output;
for (unsigned int i = 0; (i < size); i++)
{
if ((size - i) > 3)
{
output.push_back(static_cast<char>(base64_table[array[i] >> 2]));
output.push_back(static_cast<char>(base64_table[((array[i++] & 0x03) << 4) | ((array[i] & 0xF0) >> 4)]));
output.push_back(static_cast<char>(base64_table[((array[i++] & 0x0F) << 2) | ((array[i] & 0xC0) >> 4)]));
output.push_back(static_cast<char>(base64_table[array[i] & 0x3F]));
}
else if ((size - i) == 3)
{
output.push_back(static_cast<char>(base64_table[array[i] >> 2]));
output.push_back(static_cast<char>(base64_table[((array[i++] & 0x03) << 4) | ((array[i] & 0xF0) >> 4)]));
output.push_back(static_cast<char>(base64_table[(array[i] & 0x0F) << 2]));
output.push_back(static_cast<char>('='));
}
else if ((size - i) == 2)
{
output.push_back(static_cast<char>(base64_table[array[i] >> 2]));
output.push_back(static_cast<char>(base64_table[(array[i] & 0x03) << 4]));
output.push_back('=');
output.push_back('=');
}
}
return output;
}
std::vector<byte> Base64Decode(const std::string &array) // TODO
{
const char *base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz/";
}
main.cpp中:
#include <iostream>
#include <vector>
#include "base64.h"
using namespace std;
int main(int argc, char *argv[])
{
const char* prueba = "sure.";
vector<byte> texto;
string codificado;
for (unsigned int i = 0; (prueba[i] != 0); i++)
{
texto.push_back(prueba[i]);
}
codificado = Base64Encode(texto);
cout << codificado;
return 0;
}
PD:对不起,我的英语不好的知识:P
检查您发布的代码片段,您应该收到编译错误,而不是链接错误。 – 2010-04-18 14:18:03