Compilare: user.cpp: In function ‘int main()’: user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < prim.size(); ++j) { ^ user.cpp:37:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < prim.size(); ++j) { ^ user.cpp:42:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:45:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^