Borderou de evaluare (job #524070)

Eroare de compilare: user.c:3:1: error: unknown type name 'using' user.c:3:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std' user.c: In function 'main': user.c:52:5: warning: too many arguments for format [-Wformat-extra-args] user.c:9:12: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] user.c:10:12: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] user.c:13:10: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] user.c:40:14: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]