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<iostream>
#include<vector>
int main()
{
	while (1) {
		int sum = 0;
		int num;
		std::cin >> num;
		if (num == 0)break;
		std::vector<std::vector<int>>vec(num + 1, std::vector<int>(num + 1));
		for (int i = 0; i < num; ++i) {
			for (int j = 0; j < num; ++j) {
				std::cin >> vec[i][j];
			}
		}
		for (int i = 0; i < num; ++i) {
			for (int j = 0; j < num; ++j) {
				vec[num][i] += vec[j][i];
				sum += vec[j][i];
				vec[i][num] += vec[i][j];
			}
		}
		vec[num][num] = sum;
		for (int i = 0; i < num + 1; ++i) {
			for (int j = 0; j < num + 1; ++j) {
				if (j == num)std::cout << vec[i][j] << std::endl;
				else std::cout << vec[i][j] << " ";
			}
		}
	}
	return 0;
}

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

int main(){
    int n = 0;
    while (1){
	cin >> n;
	if (!n) break;
	vector<vector<int> > matrix(n+1, vector<int>(n+1));
	int input;
	for (int a = 0; a < n; a++){
	    matrix[a][n] = 0;
	    for (int b = 0; b < n; b++){
		cin >> matrix[a][b];
		matrix[a][n] += matrix[a][b];
	    }
	}
	for (int a = 0; a < n; a++){
	    for (int b = 0; b < n; b++){
		matrix[n][b] += matrix[a][b];
	    }
	}
	for (int b = 0; b < n; b++)
	    matrix[n][n] += matrix[n][b];

	for (int a = 0; a < n+1; a++){
	    for (int b = 0; b < n+1; b++)
		cout << setw(5) << right << matrix[a][b] << " ";
	    cout << '\n';
	}
    }
}

C++: #include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
#define rep(i,n) for(int i=0;i<n;++i)

int nums[12][12];
int main()
{
    int n;
    while(cin>>n)
    {
        if(n==0){break;}
        memset(nums,0,sizeof(nums));
        rep(j,n)rep(i,n)
        {
            cin>>nums[i][j];
            nums[i][n] += nums[i][j];
            nums[n][j] += nums[i][j];
        }
        rep(i,n){nums[n][n] += nums[i][n];}
        
        rep(j,n+1)
        {
            rep(i,n+1)
            {
                printf("%5d",nums[i][j]);
            }
            cout << endl;
        }

    }
    return 0;
}

C++: #include <stdio.h>
//#include <math.h>
using namespace std;

int log10(int n) {
	int keta = 0;
	while (n > 0) {
		n /= 10;
		keta++;
	}
	return keta;
}

int main() {
	const int MAX_N = 20;
	int N;
	int table[MAX_N][MAX_N];
	bool first = true;

	while (1) {
		for (int i = 0;i < MAX_N;i++) {
			for (int j = 0;j < MAX_N;j++) {
				table[i][j] = 0;
			}
		}
		scanf("%d", &N);
		if (!N)break;
		if (!first)printf("\n");
		for (int i = 0;i < N;i++) {
			for (int j = 0;j < N;j++) {
				scanf("%d", &table[i][j]);
			}
		}

		for (int i = 0;i < N;i++) {
			for (int j = 0;j < N;j++) {
				table[i][N] += table[i][j];
				table[N][j] += table[i][j];
				table[N][N] += table[i][j];
			}
		}

		for (int i = 0;i <= N;i++) {
			for (int j = 0;j <= N;j++) {
				for (int k = 0;k < 5-log10(table[i][j]);k++) {
					printf(" ");
				}
				printf("%d", table[i][j]);
			}
			if(i < N) printf("\n");
		}
		first = false;
	}

	return 0;
}

C++: #include<iostream>
#include<cstdio>

using namespace std;

int main()
{
	int n;
	int i,j;
	for(;;)
	{
		cin >> n ;
		if(n==0)
			break;
		int table[12][12]={0};
		
		for(i=0;i<n;i++)
		{
			for(j=0;j<n;j++)
			{
				cin >> table[i][j] ;
			}
		}
		
		for(i=0;i<=n;i++)
		{
			for(j=0;j<=n;j++)
			{
				if(j!=n)
				{
					printf("%5d ",table[i][j]);
					table[i][n]+=table[i][j];
					table[n][j]+=table[i][j];
				}
				else
					printf("%5d\n",table[i][j]);
			}
		}
	}
}

C++: #include <stdio.h>
#include <math.h>
using namespace std;

int main() {
	const int MAX_N = 20;
	int N;
	int table[MAX_N][MAX_N];

	while (1) {
		for (int i = 0;i < MAX_N;i++) {
			for (int j = 0;j < MAX_N;j++) {
				table[i][j] = 0;
			}
		}
		scanf("%d", &N);
		if (!N)break;
		for (int i = 0;i < N;i++) {
			for (int j = 0;j < N;j++) {
				scanf("%d", &table[i][j]);
			}
		}

		for (int i = 0;i < N;i++) {
			for (int j = 0;j < N;j++) {
				table[i][N] += table[i][j];
				table[N][j] += table[i][j];
				table[N][N] += table[i][j];
			}
		}

		for (int i = 0;i <= N;i++) {
			for (int j = 0;j <= N;j++) {
				for (int k = 0;k < 5-(log10(table[i][j])+1);k++) {
					printf(" ");
				}
				printf("%d", &table[i][j]);
			}
			printf("\n");
		}
	}

	return 0;
}

C++: #include <stdio.h>
#include <cmath>
#include <algorithm>
#include <queue>
 
using namespace std;
 
 
 
int main(){
 
    int n,tmp,row_sum,col_sum[11];
 
    while(true){
        scanf("%d",&n);
        if(n == 0)break;
 
        for(int i=0; i < 11; i++)col_sum[i] = 0;
 
        for(int i=0; i < n; i++){
            row_sum = 0;
            for(int k=0; k < n; k++){
                scanf("%d",&tmp);
                printf("%5d",tmp);
                row_sum += tmp;
                col_sum[k] += tmp;
            }
            printf("%5d\n",row_sum);
            col_sum[n] += row_sum;
        }
        for(int i=0; i <= n; i++)printf("%5d",col_sum[i]);
        printf("\n");
    }
 
    return 0;
}

C++: #include<iostream>
#include<cstring>
using namespace std;
int x[4000][4000], n;
int main() {
	while (true) {
		memset(x, 0, sizeof(x));
		cin >> n;
		if (!n) { break; }
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < n; j++) {
				cin >> x[i][j]; x[i][n] += x[i][j]; x[n][j] += x[i][j]; x[n][n] += x[i][j];
			}
		}
		for (int i = 0; i <= n; i++) {
			for (int j = 0; j <= n; j++) {
				if (x[i][j] < 10) { cout << " " ; }
				if (x[i][j] < 100) { cout << " " ; }
				if (x[i][j] < 1000) { cout << " " ; }
				if (x[i][j] < 10000) { cout << " " ; }
				cout << x[i][j];
			}
			cout << endl;
		}
	}
}

C++: #include<iostream>
using namespace std;
int main() {
	int n;
	while (cin >> n, n) {
		int data[150][150] = { 0 };

		for (int i = 0;i < n;i++) {
			for (int j = 0;j < n;j++) {
				cin >> data[i][j];
				data[i][n] += data[i][j];
			}
			data[n][n] += data[i][n];
		}
		for (int j = 0;j < n;j++) {
			for (int i = 0;i < n;i++) {
				data[n][j] += data[i][j];
			}

		}
		for (int i = 0;i < n+1;i++) {
			for (int j = 0;j < n+1;j++) {
				cout << data[i][j]<<" ";
			}
			cout << endl;
		}
		

	}
	cout << endl;

}

C++: #include<cstdio>
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
int main(){
    int N;
    while(cin>>N,N){
        int num[150][150]={{0}};
        for(int i=0;i<N;i++){
            for(int j=0;j<N;j++){
                cin>>num[i][j];
                num[i][N]+=num[i][j];
                num[N][j]+=num[i][j];
                num[N][N]+=num[i][j];
            }
        }
        for(int i=0;i<=N;i++){
            for(int j=0;j<=N;j++){
                if(num[i][j]<10){
                    for(int k=0;k<4;k++)cout<<" ";
                }
                else if(num[i][j]<100){
                    for(int k=0;k<3;k++)cout<<" ";
                }
                else if(num[i][j]<1000){
                    for(int k=0;k<2;k++)cout<<" ";
                }
                else if(num[i][j]<10000){
                    for(int k=0;k<1;k++)cout<<" ";
                }
                cout<<num[i][j];
            }
            cout<<endl;
        }
    }
    return 0;
}