Go: package main

import (
	"fmt"
	"strconv"
)

func main() {
	for _, leftValue := range MultiplicationTableNum(9) {
		for _, rightValue := range MultiplicationTableNum(9) {
			strLeftVal, strRightVal, strMulti := strconv.Itoa(leftValue), strconv.Itoa(rightValue), strconv.Itoa(Multiplication(leftValue, rightValue))
			fmt.Println(strLeftVal + "x" + strRightVal + "=" + strMulti)
		}
	}
}

func MultiplicationTableNum(num int) []int {
	multiNum := []int{}
	for i := 1; i <= num; i++ {
		multiNum = append(multiNum, i)
	}
	return multiNum
}

func Multiplication(x, y int) int {
	return x * y
}

C++: //include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>

using namespace std;

//conversion
//------------------------------------------
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

//math
//-------------------------------------------
template<class T> inline T sqr(T x) {return x*x;}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<long, long> PLL;
typedef long long LL;
//container util
//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

//constant
//--------------------------------------------
const double EPS = 1e-10;
const double PI  = acos(-1.0);

//clear memory
#define CLR(a) memset((a), 0 ,sizeof(a))




int main(){
	FOR(i,1,10)FOR(j,1,10){
		cout<<i<<"x"<<j<<"="<<i*j<<endl;
	}
	return 0;
}

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

int main(){
    for(int i = 1; i < 10; i++){
        for(int j = 1; j < 10; j++){
            printf("%dx%d=%d\n",i,j,i*j);
        }
    }
    return 0;
}

C++: #include<stdio.h> 
int main()
{
	for(int i=1;i<10;i++)
	{
		for(int j=1;j<10;j++)
		{
			printf("%dx%d=%d\n", i, j, i*j);
		}
	}
	return 0;
}

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

int main()
{
	for(int i=1; i<10; ++i)
	{
		cout<<i<<"*"<<i<<"="<<i*i<<endl;
	}

return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
for(int i=0;i<9;i++){
for(int j=0;j<9;j++)
cout<<i<<"x"<<j<<"="<<i*j<<endl;
}
return 0;}

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

int main()
{
    for(int i=1; i<=9; i++)
    {
        for(int j=1; j<=9; j++)
        {
            int sum=i*j;
            cout<<i<<"x"<<j<<" = "<<sum<<endl;
        }
    }
    return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ctime>
#include <queue>

#define rep(x,to) for(x=0;x<to;x++)
#define rep2(x,from,to) for(x=from;x<to;x++)

using namespace std;


int main(void){

int i,j;

	rep2(i,1,10) rep2(j,1,10) 
		cout << i << "x" << j << "=" << i*j << endl;
	return 0;
}

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

int main(){
	for(int i = 1; i < 10; i++ ){
		for(int j = 1; j < 10; j++ ){
			cout << i << "x" << j << "=" << i * j << endl;
		}
	}
	
	return 0; 
}

C++: #include <iostream>
using namespace std;
int main(void){
    int x, y;
    
    for (x = 1; x <= 9; x++) {
        for (y = 1; y <= 9; y++) {
            cout << x << "x" << y << "=" << x*y << endl;
        }
    }// Your code here!
    return 0;
}

C++: #include<stdio.h>

int main(){
  int i,j;
  for(i=1; i<=9; i++)
    for(j=1; j<=9; j++)
      printf("%dx%d=%d\n",i,j,i*j);
  return 0;
}

C++: #include<stdio.h>
int i,j,k;main(){for(;i<81;i++)j=i/9+1,k=i%9+1,printf("%dx%d=%d\n",j,k,j*k);}

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

int main() {
	for(int i = 1; i < 10; i++) {
		for(int j = 1; j < 10; j++) {
			cout << i << "x" << j << "=" << i*j << endl;
		}
	}
}

C++: i;main(j){for(;++i<=9;)for(j=1;j<=9;)printf("%dx%d=%d\n",i,j++,i*j);}

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

int main(){
int a = 1;int b = 1;int i = 1;int ii = 1;
for(ii = 1;ii <= 9;ii++){
	b = 1;
	for(i = 1;i <= 9;i++){
	 	cout << a << "x" << b << "=" << a*b << endl;
	 	b = b+1;
		}
	a = a+1;
	}
    return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <sstream>

using namespace std;

int main()
{
	vector<string> sv;
	for (int i = 1; i <= 9; i++){
		for (int j = 1; j <= 9; j++){
			stringstream ss;
			ss << i << '*' << j << '=' << i*j << '\n';
			string temp = ss.str();
			sv.push_back(temp);
		}
	}

	for_each(sv.begin(), sv.end() ,
		[](string tmp){
		cout << tmp;
		}
	);
	getchar();
}

C++: #include<iostream>

int main(){

	for(int i=1;i<10;i++){
		for(int j=1;j<10;j++){
			printf("%dx%d=%d\n",i,j,i*j);
		}
	}
    return 0;
}

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

int main(){
    for(int i=1; i<=9; i++){
        for(int j=1; j<=9; j++){
            cout <<i<<"x"<<j<<"="<<i*j<<endl;
        }
    }
    return 0;
}

C++: //AOJ 0000
//include
#include<cstdio>
#include<cctype>
#include<cstring>
#include<cstdlib>
#include<algorithm>
#include<stack>
#include<queue>
#include<deque>
#include<vector>
#include<list>
#include<bitset>
#include<set>
#include<iostream>
 
//using namespace
using namespace std;
 
//define
 
//variable
short a, b;
 
//function
int main(){
  for(a = 1; a <= 9; a++)
    for(b = 1; b <= 9; b++)
      printf("%dx%d=%d\n", a, b, a * b);
  return 0;
}

C++: #include<bits/stdc++.h>
#define rep(i,n) for(int i=1;i<=n;i++)
using namespace std;
int main(){
 rep(i,9)rep(j,9){
  cout << i << "x" << j << "=" << i*j << endl;
 }
 return 0;
}

C++: #include<iostream>

using namespace std;

int main(void){

	for(int i=0;i<10;i++)
		for(int j=0;j<10;j++)
		cout << i << "x" << j << "=" << i*j << endl;
	
return 0;
}

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

int main(){
  for(int i=1; i<10; i++ ){
    for(int j=1; j<10 ; j++){
      cout << i <<"×"<< j<< "="<<i*j <<endl;
    }
  }
return 0;
}

C++: #include<iostream>

using namespace std;

int main(){
    for (int i = 1; i < 10; i++) {
        for (int j = 1; j < 10; j++) {
            cout << i << "x" << j << "=" << i*j << endl;
        }
    }
    return 0;
}

C++: //ツ暗按可コツづ個フツォツーツマツッツトツづ可従ツづづ出ツ療債づーツつケツづヲツ　ツ禿シツ療債づ債づ按つ「
//1x1=1
//1x2=2
//.
//.
//9x8=72
//9x9=81

#include<iostream>
using namespace std;

int main(void)
{
	int l, r;
	for(int i = 0; i < 81; i++)
	{
		l = i/9+1;
		r = i%9+1;
		cout << l << 'x' << r << '=' << l*r << endl;
	}
	return 0;
}

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

int main()
{
  for(int i=1;i<=9;i++){
    for(int j=1;j<=9;j++){
      cout<<i<<"x"<<j<<"="<<i*j<<endl;
    }
  }

  return 0;
}

C++: for(int i=1; i<=9; ++i){
		for(int j=1; j<=9; ++j){
			int x = i*j;
			printf("%dx%d=%d\n",i,j,x);
		}
	}

C++: #include<iostream>
using std::cout;
using std::endl;

int main()
{
	for (int x = 1; x <= 9; x++)
	{
		for (int y = 1; y <= 9; y++)
		{
			cout << x << "??" << y << "=" << x*y << endl;
		}
	}
		return 0;
}

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

int main(){
	int i, j;
	
	for(i = 1;i <= 9; i++)
	{
		for(j = 1;j <= 9; j++)
		{
			printf("%dx%d=%d\n", i, j, i*j);
		}
	}
	
	return 0;
}