Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	stdin := bufio.NewScanner(os.Stdin)
	for stdin.Scan() {
		n, _ := strconv.Atoi(stdin.Text())
		if n == 0 {
			break
		}

		a := make([][]int, n+1)
		for i := 0; i < n; i++ {
			sum := 0
			stdin.Scan()
			a[i] = make([]int, n+1)
			str := strings.Split(stdin.Text(), " ")
			for j := 0; j < n; j++ {
				a[i][j], _ = strconv.Atoi(str[j])
				sum += a[i][j]
				fmt.Printf("%5d", a[i][j])
			}
			a[i][n] = sum
			fmt.Printf("%5d\n", a[i][n])
		}
		a[n] = make([]int, n+1)
		for i := 0; i <= n; i++ {
			sum := 0
			for j := 0; j < n; j++ {
				sum += a[j][i]
			}
			a[n][i] = sum
			fmt.Printf("%5d", a[n][i])
		}
		fmt.Println()
	}
}

C++: #include <cstdio>
#include <iostream>
using namespace std;

int main(){
	int n;
	while(cin >> n){
		if(n == 0) break;
		else{
			int data[n+2][n+2];

			for (int i = 0; i < n+2; ++i){
				for(int j = 0; j < n+2; j++){					
				data[i][j] = 0;
				}
			}
			
			for (int i = 0; i < n; ++i){
				for(int j = 0; j < n; j++){					
				cin >> data[i][j];
				}
			}
			for (int i = 0; i < n; ++i){
				for(int j = 0; j < n; j++){	
					data[i][n] += data[i][j];
				}
			}
			for (int i = 0; i < n+1; ++i){
				for(int j = 0; j < n; j++){	
					data[n][i] += data[j][i];
				}
			}
			for (int i = 0; i < n+1; ++i){
				for(int j = 0; j < n+1; j++){
cout.width(5);
					cout<<" "<< data[i][j];
					// if (j != n) cout<<" ";
				}
				cout << endl;
			}
				
		}
	}
	return 0;
}

C++: #include <cstdio>
#include <cstring>
int main(void)
{
  while(1){
    int n;
    int d[111][111];
    scanf("%d",&n);
    if(!n) break;
    memset(d,0,sizeof(d));
    for(int i = 0; i < n; i++){
      for(int j = 0; j < n; j++){
	scanf("%d",&d[i][j]);
	d[n][j] += d[i][j];
	d[i][n] += d[i][j];
	d[n][n] += d[i][j];
      }
    }
    for(int i = 0; i <= n; i++){
      for(int j = 0; j <= n; j++){
	printf("%5d%c",d[i][j],(j == n)?'\n':' ');
      }
    }
  }
}

C++: #include<iostream>
#include<iomanip>
using namespace std;
int main(){
    int mlc[11][11],n;
    while(cin>>n,n){
        //restart
        for(int i=0;i<11;i++)for(int j=0;j<11;j++)mlc[i][j]=0;
        //input
        for(int i=0;i<n;i++)for(int j=0;j<n;j++)cin>>mlc[i][j];
        //sum
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
                mlc[i][n]+=mlc[i][j];
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
                mlc[n][i]+=mlc[j][i];

        for(int i=0;i<n;i++)mlc[n][n]+=mlc[i][n];

        for(int i=0;i<=n;i++){
            for(int j=0;j<=n;j++)cout<<setw(5)<<mlc[i][j];
            cout<<endl;


        }

    }
    return 0;
}

C++: #include <iostream>
#include <iomanip>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>
#include <functional>

using namespace std;

typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int,int> PII;
typedef long long ll;
typedef unsigned long long ull;

#define REP( i, m, n ) for ( int i = (int)( m ); i < (int)( n ); i++ )
#define UREP( i, m, n ) for ( unsigned int i = (unsigned int)( m ); i < (unsigned int)( n ); i++ )

#define ITER( c ) __typeof( (c).begin() )
#define IREP( c, it ) for ( ITER(c) it = c.begin(); it != c.end(); ++it )
#define ALL( c ) (c).begin(), (c).end()
#define RALL( c ) (c).rbegin(), (c).rend()

#define PB( n ) push_back( n )
#define MP( a, b ) make_pair( ( a ), ( b ) )
#define EXIST( c, e ) ( (c).find( e ) != (c).end() )

#define fst first
#define snd second

#define DUMP( x ) cerr << #x << " = " << ( x ) << endl
#define DEBUG( x ) cerr << __FILE__ << ":" << __LINE__ << ": " << #x << " = " << ( x ) << endl


int main()
{
	while ( true )
	{
		int n;
		cin >> n;

		if ( n == 0 )
		{
			break;
		}

		vector< vector<int> > table;

		REP( i, 0, n )
		{
			table.PB( vector<int>() );
			int sum = 0;

			REP( j, 0, n )
			{
				int in;
				cin >> in;
				table[i].PB( in );
				sum += in;
			}

			table[i].PB( sum );
		}

		table.PB( vector<int>() );

		REP( i, 0, n + 1 )
		{
			int sum = 0;

			REP( j, 0, n )
			{
				sum += table[j][i];
			}

			table[n].PB( sum );
		}

		REP( i, 0, table.size() )
		{
			REP( j, 0, table[i].size() )
			{
				printf("%5d", table[i][j] );
			}
			cout << endl;
		}
	}

	return 0;
}

C++: #include <iostream>
#include <vector>
using namespace std;

int main(){
	int data_size;
	cin >> data_size;
	while (data_size){
		vector<vector<int>> data;
		vector<vector<int>> data_digit;
		data.resize((data_size + 1)*(data_size + 1));
		data_digit.resize((data_size + 1) * (data_size + 1));
		for (int i = 0; i < data_size; i++){
			data[i].resize(data_size + 1);
			data_digit[i].resize(data_size + 1);
			for (int j = 0; j < data_size; j++){
				cin >> data[i][j];
				int tmp = data[i][j];
				data_digit[i][j] = 0;
				while (tmp){
					tmp /= 10;
					data_digit[i][j]++;
				}
			}
		}
		data[data_size].resize(data_size + 1);
		data_digit[data_size].resize(data_size + 1);
		for (int i = 0; i < data_size; i++){
			int sum = 0;
			for (int j = 0; j < data_size; j++){
				sum += data[i][j];
			}
			data[i][data_size] = sum;
			int tmp = sum;
			data_digit[i][data_size] = 0;
			while (tmp){
				tmp /= 10;
				data_digit[i][data_size]++;
			}

		}
		for (int i = 0; i < data_size + 1; i++){
			int sum = 0;
			for (int j = 0; j < data_size; j++){
				sum += data[j][i];
			}
			data[data_size][i] = sum;
			int tmp = sum;
			data_digit[data_size][i] = 0;
			while (tmp){
				tmp /= 10;
				data_digit[data_size][i]++;
			}
		}

		for (int i = 0; i < data_size + 1; i++){
			for (int j = 0; j < data_size + 1; j++){
				for (int k = data_digit[i][j]; k < 5; k++){
					cout << " ";
				}
				cout << data[i][j];
			}
			if (i!=data_size)
			cout << "\n";
		}
		cout << "\n";
		cin >> data_size;
	}
	return 0;
}

C++: #include <stdio.h>

int main(void)
{
	int i, j;
	int n;
	int h[16][16];
	
	while (scanf("%d", &n), n != 0){
		
		for (i = 0; i <= n; i++){
			for (j = 0; j <=n; j++){
				h[i][j] = 0;
			}
		}
		
		for (i = 0; i < n; i++){
			for (j = 0; j < n; j++){
				scanf("%d", &h[i][j]);
				h[i][n] += h[i][j];
				h[n][j] += h[i][j];
			}
		}
		
		for (i = 0; i < n; i++){
			h[n][n] += h[i][n];
		}
		for (i = 0; i <= n; i++){
			for (j = 0; j <= n; j++){
				printf("%5d", h[i][j]);
			}
			printf("\n");
		}
	}
	return (0);
}

C++: #include <iostream>
#include <iomanip>
using namespace std;

int main(void){
    int n, a[11][11], i, j ;
    cin >> n;
    
    while(n != 0){
        //初期化
        for(i=0; i<=10; i++){
            for(j=0; j<=10; j++){
                a[i][j]=0;
            }
        }
        
        for(i=0; i<n; i++){
            for(j=0; j<n; j++){
                cin >> a[i][j];
                a[i][n] += a[i][j];
                a[n][j] += a[i][j];
                cout << setw(5) << a[i][j];
            }
            a[n][n] += a[i][n];
            cout << setw(5) << a[i][n] << endl;
        }
        for(j=0; j<=n; j++){
            cout << setw(5) << a[n][j];
        }
        cout << endl;
        cin >> n;
    }
    return 0;
}

C++: #include<stdio.h>
int d[10][10];
int t[10][10];
int n;
int i,j;
int res;

int main(){
	while(1){
	scanf("%d",&n);
	if(n==0)return 0;
	for(i=0;i<n;i++)for(j=0;j<n;j++){
		scanf("%d",&d[i][j]);
		t[i][j]=0;
	}
	for(i=0;i<n;i++){
		res=0;
		for(j=0;j<n;j++){
			res+=d[i][j];
			printf("%-5d ",d[i][j]);
		}
		printf("%-5d \n",res);
	}
	for(i=0;i<n;i++){
		res=0;
		for(j=0;j<n;j++){
			res+=d[j][i];
		}
		printf("%-5d ",res);
	}
	res=0;
	for(i=0;i<n;i++)for(j=0;j<n;j++){
		res+=d[i][j];
	}
	printf("%-5d \n",res);
	}
}