#include <iostream>
#include <cmath>
using namespace std;
int pace( char a[2], char b[2] )
{
	int m = 1,n = 2;
	double p = static_cast<double>( b[0]-a[0] );
    double q = static_cast<double>( b[1]-a[1] );
	double x = fabs( p );
	double y = fabs( q );
	if( x==0&&y==0 )
		cout<<"0 "<<"0 "<<"0 "<<"0"<<endl;
    else if( x == y )
		cout<<x<<" "<<m<<" "<<n<<" "<<m<<endl;
	else if( x == 0 )
		cout<<y<<" "<<m<<" "<<m<<" Inf"<<endl;
	else if( y == 0 )
		cout<<x<<" "<<m<<" "<<m<<" Inf"<<endl;
	else cout<<( x>y?x:y )<<" "<<n<<" "<<n<<" Inf"<<endl;
	return 0;
}
int main()
{
	int t;
	char a[2],b[2];
	cin>>t;
	for( int i=1; i<=t; i++ ){
		cin>>a>>b;
		pace( a,b );}
	return 0;
}

• 距离不需要浮点数，整数就可以了。浮点数判==0不行，要判断与0的差小于一个很小的数 (780) ava 2005-03-02 07:33:42
  • 他只不过是想用fabs罢了,其实本来就有一个abs (0) frkstyc 2005-03-02 13:56:01