Compilare: user.cpp: In function ‘void solve()’: user.cpp:107:12: warning: variable ‘pr’ set but not used [-Wunused-but-set-variable] int i, pr, nr; ^ user.cpp: In function ‘void readFile()’: user.cpp:77:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:82:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp: In function ‘void answerQuestions()’: user.cpp:121:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &q); ^ user.cpp:130:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &p, &c); ^