Borderou de evaluare (job #532675)

Compilare: user.cpp: In function ‘void calc_fact(const string&)’: user.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘bool cmp(const string&)’: user.cpp:72:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:74:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:83:16: warning: array subscript has type ‘char’ [-Wchar-subscripts]