运行 ID: 3600

Main.cc:8:11: error: ‘::main’ must return ‘int’
 void main()
           ^
Main.cc: In function ‘int main()’:
Main.cc:13:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
Main.cc:25:8: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result]
  system("pause");
  ~~~~~~^~~~~~~~~