Eroare de compilare: user.c: In function 'main': user.c:12: warning: implicit declaration of function 'memset' user.c:12: warning: incompatible implicit declaration of built-in function 'memset' user.c:13: error: 'v' undeclared (first use in this function) user.c:13: error: (Each undeclared identifier is reported only once user.c:13: error: for each function it appears in.) user.c:19: warning: too many arguments for format user.c:32: error: 'a' undeclared (first use in this function) user.c:36: warning: suggest parentheses around assignment used as truth value user.c:43: warning: suggest parentheses around assignment used as truth value