Compilare: user.cpp: In function ‘int main()’: user.cpp:51:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d", &N, &M ); ^ user.cpp:59:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d", &A[i][j] ); ^ user.cpp:55:27: warning: iteration 15u invokes undefined behavior [-Waggressive-loop-optimizations] Prod[i][j] = i * j; ^ user.cpp:53:5: note: containing loop for( int i = 1; i <= 32 ; i ++ ) ^