MZ

#include <iostream.h>
#include <iomanip.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>

double a[100][100], b[100], x[100], eps, rel;
int i, j, k, size;

int main()
{
//==Vvod_dannich==================================|
    cout<<"Vvedite razmernosy': "<<endl;
    cin>>size;
    cout<<"Vvedite trebyemtu tochnost': "<<endl;
    cin>>eps;
    cout<<"Vvedite elenenti massiva:"<<endl;
    for (i=0; i<size; i++)
    {
        for (j=0; j<size; j++)
        {
            cout<<"a["<<i+1<<"]["<<j+1<<"]=";
            cin>>a[i][j];
            cout<<endl;
        }
    }
    cout<<"Vvedite svobodnie chleni:"<<endl;
    for (i=0; i<size; i++)
    {
        cout<<"b["<<i+1<<"]="<<endl;
        cin>>b[i];
    }
    cout<<"Vvedennie dannie:"<<endl;
    cout<<"_________________________"<<endl;
    for (i=0; i<size; i++)
    {
        for (j=0; j<size; j++)
        {
            cout<<setw(3)<<a[i][j]<<" ";
        }
        cout<<setw(3)<<"|"<<setw(2)<<b[i]<<endl;
    }
    for (i=0; i<size; i++)
    {
        x[i]=0;
    }
//==MZ============================================|
    double sum1, sum2, xN, m;
    int count=0;
    do
    {
        m=0;
        for (i=0; i<size; i++)
        {
            sum1=sum2=0;
            for (j=0; j<i; j++)
            {
                sum1 += a[i][j]*x[j];
            }
            for (j=i; j<size; j++)
            {
                sum2 += a[i][j]*x[j];
            }
            xN = x[i];
            x[i] -= (sum1+sum2-b[i])/a[i][i];
            if (fabs(xN-x[i])>m)
            {
                m=fabs(xN-x[i]);
            }
        }
        count++;
    }
    while (m>eps);
    if (m<eps)
    {
        for (i=0; i<size; i++)
        {
            printf("%f\n",x[i]);
        }
    }
    cout<<count<<" iteracsii"<<endl;
    return 0;
}