GCC does not compile anymore

Hello,

I have written 2 programs with GCC and they worked. I upgraded to ubuntu 8.10 and reinstalled code:blocks. Now i get this message

Code:

||=== GraphVizConverter, Release ===| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|3|warning: ignoring #pragma warn | /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘std::string filename_(int, std::string)’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|36|error: ‘strlen’ was not declared in this scope| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘void str_print(std::string)’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|47|warning: comparison between signed and unsigned integer expressions| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘void print(std::ofstream&, std::string)’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|95|warning: comparison between signed and unsigned integer expressions| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘void color(std::ofstream&, std::string)’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|109|warning: comparison between signed and unsigned integer expressions| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘void get_all(std::ifstream&)’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|138|error: ‘memcpy’ was not declared in this scope| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘void GrapheViz()’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|320|error: ‘system’ was not declared in this scope| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp||In function ‘int main()’:| /home/taghawi/Documents/Thesis/GraphVizConverter Video/GraphVizConverter.cpp|329|error: ‘system’ was not declared in this scope| ||=== Build finished: 4 errors, 4 warnings ===|

What is wrong? How can I fixe this?

David

To use strlen and memcpy, you need #include<cstring>; to use system you need #include <cstdlib>. That shouldn't have compiled previously, I don't think, as C++ (it might have compiled as straight C, except for the std::string part).

Seeing as your source files are .cpp, try using g++.

Quote:

Originally Posted by carrotcake1029

Seeing as your source files are .cpp, try using g++.

gcc and g++ can both compile C++ code. The difference between the two comes up during link time.