C++源码：缺省参数应用实例

// Example for "default parametor  缺省参数应用实例 "

#include <iostream>
using namespace std;

void defa_f1(int a,int b=1,float c=99.8,char d='p');

main()
{
 cout<<"   Now in main()\n";
 cout<<"Now is going to call \nFUNCTION defa_f1(100) ... ...";
 defa_f1(100);

}

void defa_f1(int a,int b,float c,char d)
 {

int aa,bb;
  float cc;
  char dd;
  aa=a;
  bb=b;
  cc=c;
  dd=d;
  cout<<" \n\n\n You are wellcome !  XJ ... ..\n";
  cout<<"\n  a="<<a<<",b="<<b<<",c="<<c<<",d='"<<d<<"'\n";
  cout<<"\n  aa="<<aa<<",bb="<<bb<<",cc="<<cc<<",dd='"<<dd<<"'";
 }