Borderou de evaluare (job #420489)

Compilare: user.cpp: In function ‘int main()’: user.cpp:17:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:23:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:23:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:26:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:31:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:34:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:41:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:58:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]