Compilare: user.cpp: In function ‘void read()’: user.cpp:96:53: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2]’ [-Wformat=] fscanf(in, "%s%d%d", &row_column, &k, &digit); ^ user.cpp:90:74: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d", &nr_of_rows_columns, &X, &Y, &nr_of_questions); ^ user.cpp:96:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%s%d%d", &row_column, &k, &digit); ^