Compilare: main.cpp: In member function 'void Cell::visit(Cell*, Cell*)': main.cpp:37:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses] } else if (topSongs == -1 || leftSongs != -1 && leftSongs < topSongs) { ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:42:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses] } else if (leftSongs == -1 || topSongs != -1 && topSongs < leftSongs) { ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &noRows, &noCols); ^ main.cpp:85:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &color); ^ main.cpp:94:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &color); ^