以下代码输出的是__? int foo(int x,int y) { if(x<=0||y<=0) return 1; return 3*foo(x-1,y/2); } cout<<foo(3,5)<<endl; 81 27 9 3
int foo(int x,int y) { if(x<=0||y<=0) return 1; return 3*foo(x-1,y/2); } cout<<foo(3,5)<<endl;
81
27
9
3
