Compilare: main.cpp: In function 'int main()': main.cpp:27:12: warning: array subscript has type 'char' [-Wchar-subscripts] f[i]=sol; ^ main.cpp:28:15: warning: array subscript has type 'char' [-Wchar-subscripts] n+=f[i]; ^ main.cpp:39:14: warning: unused variable 'ok' [-Wunused-variable] bool ok=1; ^~ main.cpp:32:9: warning: unused variable 'cnt' [-Wunused-variable] int cnt=0; ^~~ main.cpp:20:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^ main.cpp:48:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^ main.cpp:62:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ans); ^