Compilare: user.cpp: In function ‘int main()’: user.cpp:15:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d", &N ); ^ user.cpp:18:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d", &x, &y ); ^ user.cpp:39:10: warning: ‘st’ may be used uninitialized in this function [-Wmaybe-uninitialized] if ( i - st >= N ) ^ user.cpp:49:8: warning: ‘dr’ may be used uninitialized in this function [-Wmaybe-uninitialized] dr++; ^ user.cpp:59:48: warning: ‘drs’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf ( g, "%d %d %d", smax, sts, drs - sts ); ^