Borderou de evaluare (job #430412)

Compilare: user.cpp: In function ‘int main()’: user.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:25:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:25:6: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] user.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:42:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:42:6: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] user.cpp:45:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]