Eroare de compilare: user.c:3: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’ user.c:6: warning: integer overflow in expression user.c: In function ‘start’: user.c:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:14: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:19: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result