Borderou de evaluare (job #23320)

Compilare: user.cpp: In function ‘bool allNum(std::string)’: user.cpp:17:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int num(std::string)’: user.cpp:25:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:91:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:124:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:138:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:149:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:34:9: warning: unused variable ‘cif’ [-Wunused-variable]