d1r5.cpp

VC++常用数据算法集,里面包含了大量的常用算法程序,很有用的哟!

#include "iostream.h"
#include "math.h"
#include "stdlib.h"
#include "iomanip.h"
#include "randnumber.h"

void main()
{
    //program d1r5
    //driver program for routine mprove
    int i,j,n = 5;
	int d=0;
    double a[26], a1[6][6], a2[26], b[6], b1[6];
	int indx[6];
	CRandNumber rand;
    //输入已知的方程组的系数矩阵
    a1[1][1]=1; a1[1][2]=2; a1[1][3]=3; a1[1][4]=4; a1[1][5]= 5;
    a1[2][1]=2; a1[2][2]=3; a1[2][3]=4; a1[2][4]=5; a1[2][5]= 1;
    a1[3][1]=1; a1[3][2]=1; a1[3][3]=1; a1[3][4]=1; a1[3][5]= 1;
    a1[4][1]=4; a1[4][2]=5; a1[4][3]=1; a1[4][4]=2; a1[4][5]= 3;
    a1[5][1]=5; a1[5][2]=1; a1[5][3]=2; a1[5][4]=3; a1[5][5]= 4;
    //输入已知的方程组的右端向量b
    b[1] = 1;
    b[2] = 1;
    b[3] = 1;
    b[4] = 1;
    b[5] = 1;
    for (i = 1; i<=n; i++)
	{
        for (j = 1; j<=n;j++)
		{
            a[(i-1)*n+j] = a1[i][j];
			a2[(i-1)*n+j] = a1[i][j];
        }
    }
    for (i = 1; i<=n; i++)
	{
        b1[i] = b[i];
    }
    ludcmp(a, n, indx, d);
    lubksb(a, n, indx, b);
    //输出方程组的解b
    cout<<endl;
    cout<<"输出方程组的解"<<endl;
	cout.width(10);    cout<<b[1]<<endl;
	cout.width(10);    cout<<b[2]<<endl;
	cout.width(10);    cout<<b[3]<<endl;
	cout.width(10);    cout<<b[4]<<endl;
	cout.width(10);    cout<<b[5]<<endl;
    for (i = 1; i<=n; i++)
	{
        b[i] = b[i] * (1.0 + 0.2 * rand.fRandom());
    }
    //输出干扰后的解b
    cout<<endl;
    cout<<"输出干扰后的解"<<endl;
	cout.width(12);    cout<<b[1]<<endl;
	cout.width(12);    cout<<b[2]<<endl;
	cout.width(12);    cout<<b[3]<<endl;
	cout.width(12);    cout<<b[4]<<endl;
	cout.width(12);    cout<<b[5]<<endl;
    mprove(a2, a, n, indx, b1, b);
    //输出改善后的解b
    cout<<endl;
    cout<<"输出改善后的解"<<endl;
	cout.width(10);    cout<<b[1]<<endl;
	cout.width(10);    cout<<b[2]<<endl;
	cout.width(10);    cout<<b[3]<<endl;
	cout.width(10);    cout<<b[4]<<endl;
	cout.width(10);    cout<<b[5]<<endl;
}