Compilare: main.cpp: In function 'int main()': main.cpp:18:11: warning: array subscript has type 'char' [-Wchar-subscripts] ord[ch]=i; ^ main.cpp:26:22: warning: array subscript has type 'char' [-Wchar-subscripts] r=r*12+ord[ch]; ^ main.cpp:14:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &p, &n); ^