运行 ID: 107711

Main.cc: In function ‘int aa(int)’:
Main.cc:25:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
Main.cc: In function ‘int main()’:
Main.cc:30:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
  for(b1=1;b<=a;b1++)
              ^