#include<iostream>using namespace std;void main(){int i=0,j=0,k,n,sum=0;cout<<"输入未知数个数:";cin>>n;double **a=new double*[n+1];for(i=0;i<=n;i++){a[i]=new double[n+1];}double *b=new double[n+1];cout<<"输入线性方程的系数矩的每一行和等号右侧结果:"<<endl;for(i=1;i<=n;i++){for(j=1;j<=n;j++){cin>>a[i][j];}cin>>b[i];}k=1;while(1){for(i=k+1;i<=n;i++){a[i][k]=a[i][k]/a[k][k];}for(i=k+1;i<=n;i++){for(j=k+1;j<=n;j++){a[i][j]=a[i][j]-a[i][k]*a[k][j];}b[i]=b[i]-a[i][k]*b[k];}if(k!=(n-1)) k++;else break;}b[n]=b[n]/a[n][n];for(i=n-1;i>=1;i--){for(j=i+1;j<=n;j++){b[i]-=a[i][j]*b[j];}b[i]=(1/a[i][i])*b[i];sum=0;}for(i=1;i<=n;i++){cout<<"x"<<i<<" = "<<b[i]<<endl;}for(i=0;i<=n;i++){delete []a[i];}delete []a;delete []b;}n维线性方程组，哪里错了求大神指点