Compilare: user.cpp: In function ‘int main()’: user.cpp:12:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] contor[i]=o; ^ user.cpp:7:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("litere.in","r",stdin); ^ user.cpp:8:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("litere.out","w",stdout); ^ user.cpp:9:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%s",&n,s); ^ user.cpp:12:17: warning: array subscript is above array bounds [-Warray-bounds] contor[i]=o; ^