Borderou de evaluare (job #185247)

Compilare: user.cpp: In function ‘void grep(std::vector<node*>, std::string)’: user.cpp:47:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:57:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:68:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:69:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:39:9: warning: unused variable ‘s’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:127:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:153:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:155:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:84:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:85:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]