Compilare: user.cpp: In function ‘int main()’: user.cpp:16:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] int k=s[c[i]],l=v[c[i]]; ^ user.cpp:16:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] int k=s[c[i]],l=v[c[i]]; ^ user.cpp:20:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[c[i]] = k;v[c[i]] = l; ^ user.cpp:20:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[c[i]] = k;v[c[i]] = l; ^ user.cpp:9:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palalila2.in","r",stdin); ^ user.cpp:10:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palalila2.out","w",stdout); ^ user.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",c+1); ^