Eroare de compilare: user.c: In function 'main': user.c:15: error: expected ';' before 'foutput' user.c:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'a' user.c:18: error: 'a' undeclared (first use in this function) user.c:18: error: (Each undeclared identifier is reported only once user.c:18: error: for each function it appears in.) user.c:18: error: 'b' undeclared (first use in this function) user.c:18: warning: left-hand operand of comma expression has no effect user.c:22: warning: format '%lld' expects type 'long long int', but argument 3 has type 'int' user.c:28:2: warning: no newline at end of file