Borderou de evaluare (job #168200)

Eroare de compilare: user.c: In function ‘main’: user.c:9:16: warning: left-hand operand of comma expression has no effect [-Wunused-value] user.c:9:25: error: ‘n’ undeclared (first use in this function) user.c:9:25: note: each undeclared identifier is reported only once for each function it appears in user.c:9:22: warning: left-hand operand of comma expression has no effect [-Wunused-value] user.c:10:5: error: ‘c’ undeclared (first use in this function) user.c:13:31: error: ‘s’ undeclared (first use in this function) user.c: At top level: user.c:15:18: error: expected ‘)’ before string constant user.c:16:5: warning: data definition has no type or storage class [enabled by default] user.c:16:5: warning: type defaults to ‘int’ in declaration of ‘fclose’ [-Wimplicit-int] user.c:16:5: warning: parameter names (without types) in function declaration [enabled by default] user.c:17:5: warning: data definition has no type or storage class [enabled by default] user.c:17:5: warning: type defaults to ‘int’ in declaration of ‘fclose’ [-Wimplicit-int] user.c:17:5: warning: parameter names (without types) in function declaration [enabled by default] user.c:18:5: error: expected identifier or ‘(’ before ‘return’ user.c:19:1: error: expected identifier or ‘(’ before ‘}’ token user.c: In function ‘main’: user.c:14:5: warning: control reaches end of non-void function [-Wreturn-type]