Borderou de evaluare (job #409719)

Compilare: user.cpp: In function ‘int main()’: user.cpp:91:23: warning: statement has no effect [-Wunused-value] user.cpp:93:23: warning: statement has no effect [-Wunused-value] user.cpp:94:24: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] user.cpp:10:27: warning: unused variable ‘y’ [-Wunused-variable] user.cpp:10:35: warning: unused variable ‘a’ [-Wunused-variable] user.cpp:65:21: warning: ‘x’ may be used uninitialized in this function [-Wuninitialized]