Compilare: user.cpp: In function ‘bool finder(point)’: user.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<h[hh].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:40:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n",&n); ^ user.cpp:43:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d.%d ", &a, &b); ^ user.cpp:46:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d.%d\n", &a, &b); ^