1 #include <iostream> 2  3 using namespace std; 4 void hello(int a ,int b=7,char* pszC="*") 5 { 6     cout<<"hello"; 7 } 8  9 int main()10 {11   // hello(5);12   // hello(5,8);13    hello(6,"#"); //报错14   //hello(0,0,"#");15     return 0;16 }