Compilare: user.cpp: In function ‘int main()’: user.cpp:60:94: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d%d%d%d%d", &n, &m, &k, &t1.first, &t1.second, &t2.first, &t2.second ); ^ user.cpp:63:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &p[i].first, &p[i].second ); ^