Eroare de compilare: user.c: In function `main': user.c:4: error: `opemin' undeclared (first use in this function) user.c:4: error: (Each undeclared identifier is reported only once user.c:4: error: for each function it appears in.) user.c:4: error: `ok' undeclared (first use in this function) user.c:4: warning: left-hand operand of comma expression has no effect user.c:12: error: syntax error before '(' token user.c:20: error: syntax error before "else" user.c: At top level: user.c:24: error: syntax error before "else" user.c:27: error: `h' undeclared here (not in a function) user.c:27: warning: type defaults to `int' in declaration of `u' user.c:27: error: `v' undeclared here (not in a function) user.c:27: error: `i' undeclared here (not in a function) user.c:27: warning: data definition has no type or storage class user.c:27: error: syntax error before '++' token user.c:30: error: `h' undeclared here (not in a function) user.c:30: warning: type defaults to `int' in declaration of `u' user.c:30: error: conflicting types for `u' user.c:27: error: previous declaration of `u' user.c:30: error: `v' undeclared here (not in a function) user.c:30: error: `i' undeclared here (not in a function) user.c:30: warning: data definition has no type or storage class user.c:30: error: syntax error before '++' token user.c:38: error: `h' undeclared here (not in a function)