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<iostream>
using namespace std;
int main()
{
	int a[]={1,2,3,4,5,6,7,8,9};
	for(int i=0;i<9;i++)
	{
		for(int j=0;j<9;j++)
		{
			cout<<a[i]<<'x'<<a[j]<<'='<<a[i]*a[j]<<endl;
		}
	}
	return 0;
}

C++: #include<stdio.h>

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

    return 0;
}

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

int main() {
	int x, y;
	for (x = 1; x <= 9; x = x + 1) {
		for (y = 1; y <= 9; y = y++) {
			cout << x << "??" << y << "=" << x*y << '\n';
		}
	}

	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<<endl;
}
}
    return 0;
}

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

C++: #include <stdio.h>

int main(){
	int loop_i,loop_j;
	for(loop_i = 1;loop_i < 10;loop_i++){
		for(loop_j = 1;loop_j < 10;loop_j++){
			printf("%dx%d=%d\n",loop_i,loop_j,loop_i*loop_j);
		}
	}

	return 0;
}

C++: #include<stdio.h>
  
int main(){
int i=0,j=0;

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

C++: #include<iostream>

int main(){
	int a=1,b=1,i,n;

	for(i=1;i<=9;i++){
		for(n=1;n<=9;n++){
		std::cout<<a<<"x"<<b<<"="<<a*b<<std::endl;
		b=n+1;
			}
		a=i+1;
		b=1;
		}
	
	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++: #include<iostream>
using namespace std;
int main(){
	for(int i = 1; i < 10; i++)
	{
		cout << i << "x" << i << "=" << i*i << endl;
	}
	return 0;
}

C++: for i in range(1,10):
  print i,"x",i,"=",i*i

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 <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++: #include <iostream>

using namespace std;

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

C++: #include<bits/stdc++.h>
const long long INF = INT_MAX / 2;
const long long MOD = 1000000007;
const long double PI = 3.1415926;
#define FOR(i,r,n) for(ll i = (ll)(r); i < (ll)(n); i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n)
#define ALL(x) x.begin(),x.end()
#define RALL(x) x.rbegin(),x.rend()
#define ll long long int
using namespace std;
ll ans = 0, sum = 0, n, k, cnt = 0, w, h;
string s;
vector<ll> v;
vector < pair<ll, ll > > vp;
vector<vector<ll> > vv(50, vector<ll>(50, INF));
vector<string> vs;
vector<char> vc;
set<ll> st;
map<char, ll> mp;

/*--------------------template--------------------*/

int main()
{
	REP1(i,10)
	{
		REP1(j,10)
		{
			cout << i << 'x' << j << '=' << i*j << endl;
		}
	}
}

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++: #include <iostream>
#include <cstdio>
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(void){
    for(int i=1,j=1;i<=9;i+=j/9,j=j%9+1)printf("%dx%d=%d\n",i,j,i*j);
    return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <string>
#include <algorithm>

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;
}