Go: package main

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

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

		input := make([][]int, n+1, n+1)
		totalRow := make([]int, n+1, n+1)

		for i := 0; i < n; i++ {
			row := make([]int, n+1, n+1)
			scanner.Scan()

			row = numbers(scanner.Text())

			input[i] = row
			total(totalRow, row)
		}

		input[n] = totalRow

		for xk := range input {
			for yk, yv := range input[xk] {
				if yk == n {
					fmt.Printf("%5d\n", yv)
				} else {
					fmt.Printf("%5d", yv)
				}
			}
		}
	}
}

func total(sum, row []int) {
	for i := 0; i < len(row); i++ {
		sum[i] += row[i]
	}
}

func numbers(s string) []int {
	var n []int
	var sum int
	for _, f := range strings.Fields(s) {
		i, err := strconv.Atoi(f)
		if err == nil {
			n = append(n, i)
			sum += i
		}
	}
	n = append(n, sum)
	return n
}

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

int main(){
    int n;
    while(cin>>n , n){
        int table[n+1][n+1];
        
        for(int i=0; i<=n; i++){
            table[i][n]=0;
            table[n][i]=0;
        }
        
        for(int i=0; i<n; i++){
            for(int j=0; j<n; j++){
                cin>>table[i][j];
            }
        }
        

        for(int i=0; i<n; i++){
            for(int j=0; j<n; j++){
               table[i][n] += table[i][j];
            }
        }
        
        for(int j=0; j<=n; j++){
            for(int i=0; i<n; i++){
                table[n][j] += table[i][j];
            }
        }
        
        for(int i=0; i<=n; i++){
            for(int j=0; j<=n; j++){
                cout<<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];
			}
			cout << "\n";
		}
		cin >> data_size;
	}
	return 0;
}

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

int main(){
  int n;
  while(1){
    cin >> n;
    if(n==0)break;

    int x[15][15]={};
    for(int i = 0; i < n; i++){
      for(int j = 0; j < n; j++){
	cin >> x[i][j];
      }
    }
    for(int i = 0; i < n; i++){
      for(int j = 0; j < n; 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(j < n)	cout << x[i][j] << " ";
	if(j==n)  	cout << x[i][j] << "\n";
      }
    }
  }
  
  return 0;
}

C++: #include <iostream>
#include <cstdio>
#define MAX_N 110
using namespace std;
int main(){
	int n,i,j;
	int a[MAX_N][MAX_N];
	while(1){
		cin >> n;
		if(n==0)break;
		for(i=0;i<n;i++){
			for(j=0;j<n;j++){
				cin >> a[i][j];
			}
		}

		int sum1=0,sum[MAX_N];
		for(i=0;i<=n;i++){
			for(j=0;j<=n;j++){
				sum[j]+=a[i][j];
				if(i==n){
					a[i][j]=sum[j];
					sum[j]=0;
				}

				sum1+=a[i][j];
				if(j==n){
					a[i][j]=sum1;
					sum1=0;
				}
			}
		}

		for(i=0;i<=n;i++){
			for(j=0;j<n;j++){
				printf("%5d",a[i][j]);
			}
			printf("%5d\n",a[i][n]);
		}

	}
	return 0;
}

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


int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    while(cin>>n,n){
        int Na = n+1;
        int a[12*12] = {};
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                cin >> a[i*Na+j];
                a[n*Na+j] += a[i*Na+j];
                a[i*Na+n] += a[i*Na+j];
            }
            a[n*Na+n] += a[i*Na+n];
        }
        for(int i=0;i<Na;i++){
            for(int j=0;j<Na;j++){
                printf("%5d",a[i*Na+j]);
            }
            printf("\n");
        }
    }
    return 0;
}

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

int main()
{
    int  /*a=0,b=0,c=0,*/n=0,x=0,i=0,j=0,k=0,sum=0,ii=0;

        int aa[128][128];
        for(ii=0;;ii++){
            //int bb[]={};
            cin >> n;
            if(n==0)break;
            //if(n==0 && x==0)break;
            for(i=0;i<n;i++){
                for(j=0;j<n;j++){
                    cin >> k;
                    aa[i][j]=k;
                    sum+=k;
                }
                aa[i][j]=sum;
                sum=0;
            }


     for(j=0;j<n+1;j++){
            for(i=0;i<n;i++){
                sum+=aa[i][j];
            }
            aa[i][j]=sum;
            sum=0;

        }

            for(i=0;i<n+1;i++){
                for(j=0;j<n+1;j++){
                    cout << aa[i][j];
                    if(j<n)cout << ' ';
                }
                cout << endl;
            }

}
        //cout << endl;


}

C++: #include <bits/stdc++.h>
using namespace std;

int main() {
  int n;
  while (cin >> n) {
    if (n == 0) break;
    int v[n + 1][n + 1];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < n; j++) {
        cin >> v[i][j];
      }
    }
    // x
    for (int i = 0; i < n; i++) {
      int sum = 0;
      for (int j = 0; j < n; j++) {
        sum += v[i][j];
      }
      v[i][n] = sum;
    }
    // y
    for (int j = 0; j < n; j++) {
      int sum = 0;
      for (int i = 0; i < n; i++) {
        sum += v[i][j];
      }
      v[n][j] = sum;
    }
    int k = 0;
    for (int i = 0; i < n; i++) {
      k += v[n][i];
    }
    v[n][n] = k;

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

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

using namespace std;

int main() {
    
    int n;
    cin >> n;
    
    if(n == 0)
    break;
    
    int A[51][51] = {};
    
    for(int i=0;i<n;i++) { 
    for(int j=0;j<n;j++) {
    	
    	cin >> A[i][j];
    	
    	A[i][n] += A[i][j];
    	A[n][j] += A[i][j];
	}
	A[n][n] += A[i][n];
}

	for(int i=0;i<=n;i++) { 
    for(int j=0;j<=n;j++) {
    	
    	cout << setw(4)<< A[i][j] << " ";
    
	}
	cout << "\n";
}
    return 0;
}

C++: #include<stdio.h>
#include<string.h>
#include<math.h>

int main(void){

    int n;
    int i,j;
    for(;;){
    scanf("%d",&n);
    if(n==0)break;
    int a[11][11]={{0}};
    for(i=0;i<n;i++){
        for(j=0;j<n;j++){
            scanf("%d",&a[i][j]);
            }
        }
    for(i=0;i<n;i++){
        a[n][i]=a[0][i]+a[1][i]+a[2][i]+a[3][i]+a[4][i]+a[5][i]+a[6][i]+a[7][i]+a[8][i]+a[9][i];
    }
    for(j=0;j<n+1;j++){
        a[j][n]=a[j][0]+a[j][1]+a[j][2]+a[j][3]+a[j][4]+a[j][5]+a[j][6]+a[j][7]+a[j][8]+a[j][9];
    }
    for(i=0;i<=n;i++){
        for(j=0;j<=n;j++){
            printf("%5d",a[i][j]);
            }
            printf("\n");
        }
    }
return 0;
}