运行 ID: 343328

Main.cc:3:11: error: ‘::main’ must return ‘int’
 void main()
           ^
Main.cc: In function ‘int main()’:
Main.cc:7:6: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d",&n);
 ~~~~~^~~~~~~~~