Eroare de compilare: user.c: In function 'main': user.c:180: error: 'i' undeclared (first use in this function) user.c:180: error: (Each undeclared identifier is reported only once user.c:180: error: for each function it appears in.) user.c:181: warning: this decimal constant is unsigned only in ISO C90 user.c: At top level: user.c:185: error: expected identifier or '(' before 'else' user.c:186: error: expected identifier or '(' before '}' token