Borderou de evaluare (job #185241)

Compilare: user.cpp: In function ‘void grep(std::vector<node*>, std::string)’: user.cpp:46:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:58:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:67:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:68:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:38:9: warning: unused variable ‘s’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:126:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:152:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:154:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:83:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]