#include
#include
#include
#include
using?namespace?std;

void?main（）{
	int?nm;
	ifstream?ifile;
	ifile.open（“input.txt“）;
	ifile>>n;	
	double?a[100][100];
	int?ij;
	for（i=1;i<=n;i++）{
		for（j=1;j<=n+1;j++）{
			ifile>>a[i][j];
		}
	}
	
	cout<<“輸入方程組介數(shù)：“;
	cout<	cout<<“輸入增廣矩陣：“<	for（i=1;i<=n;i++）{
		for（j=1;j<=n+1;j++）{
			cout<		}
		cout<	}


	for（j=1;j<=n;j++）{
		double?maximax=0;
		for（i=j;i<=n;i++）{
			if（imax				imax=fabs（a[i][j]）;
				max=a[i][j];
				m=i;
			}
		}

		if（fabs（a[j][j]）!=max）?{			
			double?b;
			for（int?k=j;k<=n+1;k++）{
				b=a[j][k];
				a[j][k]=a[m][k];
				a[m][k]=b;
			}
		}

		for（int?r=j;r<=n+1;r++）{
			a[j][r]=a[j][r]/max;
		}


		for（i=j+1;i<=n;i++）{
			double?c=a[i][j];
			if（c==0）??continue;
			for（int?s=j;s<=n+1;s++）{
				a[i][s]=a[i][s]-a[j][s]*c;
			}
		}

	}
	
	for（i=n-1;i>0;i--）{
		for（j=i+1;j<=n;j++）{
			a[i][n+1]=a[i][n+1]-a[j][n+1]*a[i][j];
		}
	}
	
	cout<<“方程組的解是：“<	for（int?k=1;k<=n;k++）{
		cout<<“x“<	}

	ofstream?ofile;
	ofile.open（“output.txt“）;
	ofile<<“方程組的解是：“<	for（?k=1;k<=n;k++）{
		ofile<<“x“<	}
	ofile.close（）;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3829??2012-08-22?18:04??solution\solution.dsp

?????文件????????524??2012-08-22?03:48??solution\solution.dsw

?????文件??????41984??2012-08-22?23:40??solution\solution.ncb

?????文件??????48640??2012-08-22?23:40??solution\solution.opt

?????文件???????1041??2012-08-22?23:10??solution\solution.plg

?????文件????2382712??2012-08-22?18:00??solution\Debug\solution.pch

?????文件??????25600??2012-08-22?23:10??solution\Debug\solution.pdb

?????文件??????91136??2012-08-23?19:36??solution\Debug\vc60.idb

?????文件?????135168??2012-08-23?19:36??solution\Debug\vc60.pdb

?????文件?????581681??2012-08-23?19:36??solution\Debug\input.exe

?????文件????1147904??2012-08-23?19:36??solution\Debug\input.pdb

?????文件????2116212??2012-08-23?19:12??solution\Debug\input.pch

?????文件?????361473??2012-08-23?19:36??solution\Debug\input.obj

?????文件?????829336??2012-08-23?19:36??solution\Debug\input.ilk

?????文件??????41984??2012-08-23?19:37??solution\input.ncb

?????文件???????1110??2012-08-23?19:36??solution\input.plg

?????文件???????3389??2012-08-23?16:04??solution\input.dsp

?????文件?????????28??2012-08-23?19:36??solution\input.txt

?????文件????????535??2012-08-23?18:15??solution\input.dsw

?????文件???????1349??2012-08-23?19:36??solution\input.cpp

?????文件??????48640??2012-08-23?19:37??solution\input.opt

?????目錄??????????0??2012-08-23?07:44??solution\Debug

?????目錄??????????0??2012-08-23?07:44??solution

-----------?---------??----------?-----??----

??????????????7864275????????????????????23