![](https://csdnimg.cn/release/download_crawler_static/87855608/bgc.jpg)
//例2.8
#include <iostream.h>
#define doub(x) x*2
int main( )
{ for(int i=1;i<=3;i++)
cout<<i<<" doubled is "<<doub(i)<<endl;
cout<<"1+2 doubled is "<<doub(1+2)<<endl;
return 0;
}
//例2.9
#include <iostream.h>
inline int doub(int x)
{ return x*2; }
int main( )
{ for(int i=1;i<=3;i++)
cout<<i<<" doubled is "<<doub(i)<<endl;
cout<<"1+2 doubled is "<<doub(1+2)<<endl;
return 0;
}
10