Borderou de evaluare (job #550901)

Compilare: user.cpp: In function ‘int main()’: user.cpp:13:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:16:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:19:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:22:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:25:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:28:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:31:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:34:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:37:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:40:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]