Eroare de compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:105:43: error: ‘reverse’ was not declared in this scope reverse(polygon.begin(), polygon.end()); ^ user.cpp:107:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < polygon.size(); ++i) ^ user.cpp:42:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &N); ^ user.cpp:46:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%f", &p1); ^ user.cpp:47:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%f", &p2); ^