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 <cstdio>
#include <string>
#include <vector>
#include <algorithm>
#include <memory.h>
#include <cmath>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <ctime>
#include <iostream>
#include <functional>
#include <complex>
#include <iomanip>
#pragma comment(linker, "/STACK:836777216")

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<double, double> pdd;
typedef pair<pii, int> p3i;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<pll> vll;
typedef vector<p3i> v3i;
typedef vector<vii> vvii;
typedef vector<p3i> vp3i;
typedef long double ld;
typedef vector<ld> vld;

#define pb push_back
#define mp make_pair
#define REP(i, n) for (int (i) = 0; (i) < (n); (i)++)
#define REPD(i, n) for (int (i) = (n) - 1; (i) >= 0; (i)--)
#define FOR(i, a, b) for (int (i) = (a); (i) < (b); (i)++)
#define FORD(i,a, b) for (int (i) = (a); (i) >= (b); (i)--)
#define sz(v) (int)(v).size()
#define all(v) (v).begin(), (v).end()
#define rv(v) reverse(all(v))
#define CL(v, val) memset((v), (val), sizeof((v)))
#define SORT(a) sort(all(a))
#define un(v) SORT(v), (v).resize(unique(all(v)) - (v).begin())
#define eps 1.0e-7
#define X first
#define Y second
#define bit(n) (1 << (n))
#define bit64(n) (ll(1) << (n))
#define sqr(n) ((n) * (n))

int main(void) {
  FOR(i, 1, 10) {
    FOR(j, 1, 10) {
      printf("%dx%d=%d\n", i, j, i * j);
    }
  }
}

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

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

C++: #include<iostream>
using namespace std;
int main(){
int a;
cin >> a;
cout << a;
}

C++: #include<iostream>
#define REP(i,n) for(int i=0;i<(int)n;++i)
#define REP(i,a,b) for(int i=(int)a;i<(int)b;++i)
using namespace std;
void solver(){
    REP(i,1,10){
        REP(j,1,10){
            cout<<i<<"x"<<j<<"="<<i*j<<endl;
        }
    }

}

int main() {
    solver();
}

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


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

C++: #include<string>
#include<iostream>
using namespace std;
int main(){
	string x;
	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(){
    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(int argc, const char * argv[]) {
    for (int i = 1; i <= 9; i++) {
        for (int j = 1; j <= 9; j++) {
            cout << i << "x" << j << "=" << i*j << "\n";
        }
    }
    return 0;
}

C++: #include <stdafx.h>
#include <iostream>


using namespace std;

int main() {

	int i, j;

	for (i = 1; i <= 9; i++) {

		for (j = 1; j <= 9; j++) {

			cout << i << "x" << j << "=" << i*j << "\n";

		}

	}

	rewind(stdin);
	getchar();

	return 0;

}

C++: #define _CRT_SECURE_NO_WARNINGS
#define M_PI 3.14159265358979
#include <iostream>
#include <stdio.h>
#include <string>
#include <math.h>
#include<iomanip>
#include<vector>
#include<cmath>
#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;
		}
	}

}

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

C++: #include <stdio.h>

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

C++: #include<iostream>
using namespace std;
int main(){
int i;
for(i=1;i<10;i++)cout<<i<<"×"<<i<<"="<<i*i<<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++: #include <bits/stdc++.h>

int main(){
	using namespace std;
 for(int i=1; i<=9; i++){
 	for(int m=1; m<=9; m++){
 
 	cout<<i<<"x"<<m<<"="<<m*i<<endl;
 		}
 }	
}

C++: #include<stdio.h>

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

C++: #include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pint;
#define REP(i, n) for(int i = 0; i < (int)(n); i++)
#define IREP(i, n) for(int i = (int)(n) - 1; i >= 0; i--)
#define ALL(x) (x).begin(), (x).end()
#define MOD 1000000007
#define IMAX INT_MAX
#define IMIN INT_MIN
#define LMAX LLONG_MAX
#define LMIN LLONG_MIN
template<typename T> inline void chmin(T &a, T b){ if(a > b) a = b; }
template<typename T> inline void chmax(T &a, T b){ if(a < b) a = b; }
template<typename T> inline void xch(T &a, T &b){ T w = a; a = b; b = w; }

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

C++: #include<iostream>
using namespace std;
  
int main(){
for(int j = 1; j < 10; j++)
for(int i = 1; i < 10; i++)
cout << j << 'x' << i << '=' << j*i << endl;
}

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

C++: #include <bits/stdc++.h>
using namespace std;
#define ll long long 
#define LSone(S) ((S)&(-S))

int main()
{
	// std::ios::sync_with_stdio(false);
	for (int i = 1; i < 10; ++i)
	{
		/* code */
		for (int j = 1; j < 10; ++j)
		{
			/* code */
			cout<<i<<"x"<<j<<"="<<i*j<<"\n";
		}
	}
	return 0;
}

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

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