d7r4.cpp

此代码为VC++常用数值算法这本书中附赠的光D部分的源代码

#include "iostream.h"
#include "fstream.h"
#include "stdlib.h"

void main()
{
    //program d7r4
    //for routine sort
    double a[101];
	int i,j;
	ifstream fin;
	fin.open("d:\\vc常用数值算法集\\data\\tarray.dat",ios::in|ios::nocreate);
	if (!fin)
	{
		cerr<<"could not open d:\\vc常用数值算法集\\data\\tarray.dat"<<endl;
		exit(1);
	}
	for (i=1; i<=100; i++)
	{
		fin>>a[i];
	}
	fin.close();
    //print original array
    cout<<"Original array:"<<endl;
	cout<<endl;
    for (i = 1; i<=10; i++)
	{
        for (j = 1; j<=10; j++)
		{
			cout.width(7);
			cout.setf(ios::left);
            cout<<a[10 * (i - 1) + j];
        }
        cout<<endl;
    }
    //sort array
    sort(100, a);
    //print sorted array
	cout<<endl;
    cout<<"Sorted array:"<<endl;
	for (i = 1; i<=10; i++)
	{
        for (j = 1; j<=10; j++)
		{
			cout.width(7);
			cout.setf(ios::left);
            cout<<a[10 * (i - 1) + j];
        }
        cout<<endl;
    }
}