Compilare: user.c: In function 'main': user.c:85: warning: left-hand operand of comma expression has no effect user.c:85: warning: left-hand operand of comma expression has no effect user.c:85: warning: left-hand operand of comma expression has no effect user.c:85: warning: left-hand operand of comma expression has no effect user.c:91: warning: format '%lld' expects type 'long long int', but argument 3 has type 'int' user.c:96:2: warning: no newline at end of file