阅读下列程序，写出运行结果:
#include<iostream>
using namespace std;
int f1( int a, int b )
{
return a + b;
}
int f2( int a, int b )
{
return a - b;
}
int f3( int(*t )( int, int ), int a, int b )
{
return (*t )( a, b );
}
int main()
{
int (*p )( int, int );
p = f1;
cout << f3( p, 4, 8 ) << endl;
p = f2;
cout << f3( p, 8, 4 ) << endl;
}
林呼
