Compilare: user.cpp: In function ‘int getVal(std::string&, int)’: user.cpp:37:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] r = r * base + coresp[s[i]]; ^ user.cpp: In function ‘int main()’: user.cpp:83:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] val = val*base + coresp[N[sf]]; ^ user.cpp:44:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("basequery.in","r",stdin); ^ user.cpp:45:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("basequery.out","w",stdout); ^ user.cpp:56:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:58:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i]); ^ user.cpp:60:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&q); ^