Compilare: main.cpp: In member function 'int Hash::find(int, int)': main.cpp:21:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p != 0 && val[p] != element) ~~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:41:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &t); ^