Compilare: main.cpp: In function 'int main()': main.cpp:22:12: warning: array subscript has type 'char' [-Wchar-subscripts] f[i]=sol; ^ main.cpp:19:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^ main.cpp:45:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^ main.cpp:65:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^