Compilare: user.cpp: In function ‘int main()’: user.cpp:43:46: warning: operation on ‘st’ may be undefined [-Wsequence-point] D[st + 1] = max( D[st], D[++st] ); ^ user.cpp:46:46: warning: operation on ‘dr’ may be undefined [-Wsequence-point] D[dr + 1] = max( D[dr], D[++dr] ); ^ user.cpp:57:42: warning: operation on ‘st’ may be undefined [-Wsequence-point] D[st + 1] = max( D[st], D[++st] ); ^ user.cpp:19:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d", &M, &L ); ^ user.cpp:22:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d", &C[i] ); ^ user.cpp:25:74: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d", &OldSegment[i].x, &OldSegment[i].y ); ^