Thread: C++ md5()

Originally Posted by zodiacWarrior

When I try to run their suggested quote, I get:

/cygdrive/c/DOCUME~1/mehrdad/LOCALS~1/Temp/ccpcV0op.o:myMD5.cpp.text+0x79): undefined reference to `md5wrapper::md5wrapper()'
/cygdrive/c/DOCUME~1/mehrdad/LOCALS~1/Temp/ccpcV0op.o:myMD5.cpp.text+0xd7): undefined reference to `md5wrapper::getHashFromString(std::basic_string<c har, std::char_traits<char>, std::allocator<char> >)'
/cygdrive/c/DOCUME~1/mehrdad/LOCALS~1/Temp/ccpcV0op.o:myMD5.cpp.text+0x1b3): undefined reference to `md5wrapper::getHashFromFile(std::basic_string<cha r, std::char_traits<char>, std::allocator<char> >)'
/cygdrive/c/DOCUME~1/mehrdad/LOCALS~1/Temp/ccpcV0op.o:myMD5.cpp.text+0x2c8): undefined reference to `md5wrapper::~md5wrapper()'
/cygdrive/c/DOCUME~1/mehrdad/LOCALS~1/Temp/ccpcV0op.o:myMD5.cpp.text+0x322): undefined reference to `md5wrapper::~md5wrapper()'
collect2: ld returned 1 exit status

Did you type "g++ md5wrapper.cpp md5.cpp" on the command line, or just md5.cpp?

You need all those .h files too.

Originally Posted by tabstop

Did you type "g++ md5wrapper.cpp md5.cpp" on the command line, or just md5.cpp?

Thank you so much. This seems to have done the trick and I no longer get error messages. However, when I run the program, I get nothing from the output. How can I print out what the MD5 hash for "Hello World" is? Is the hash stored in the variable hash1?

The reason I am confused is because the variable hash1 was not declared...unless it is declared elsewhere? The code that I am running is as follows:

Code:

#include "md5wrapper.h"

int main( int argc, char** argv )
{
	// creating a wrapper object
	md5wrapper md5;

	// create a hash from a string
	std::string hash1 = md5.getHashFromString("Hello World");

	// create a hash from a file
	std::string hash2 = md5.getHashFromFile("readme.txt");

	return 0;
}

Originally Posted by zodiacWarrior

Code:

#include "md5wrapper.h"

int main( int argc, char** argv )
{
	// creating a wrapper object
	md5wrapper md5;

	// create a hash from a string
	std::string hash1 = md5.getHashFromString("Hello World"); //hash1 conveniently stored right here

	// create a hash from a file
	std::string hash2 = md5.getHashFromFile("readme.txt");

	return 0;
}

Yes, if you want to see it, you'll need to send that string to cout.

Originally Posted by zodiacWarrior

Code:

#include "md5wrapper.h"

int main( int argc, char** argv )
{
	// creating a wrapper object
	md5wrapper md5;

	// create a hash from a string
	std::string hash1 = md5.getHashFromString("Hello World"); //hash1 conveniently declared right here
	// create a hash from a file
	std::string hash2 = md5.getHashFromFile("readme.txt");

	return 0;
}

Yes, if you want to see it, you'll need to send that string to cout.

Thank you for your help, I think I have it now.