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>

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

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

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

C++: #include<cstdio>
main(){

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

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

/**------------ SUB ROUTIONE -------------*/
/**------------ SUB ROUTIONE -------------*/

int main()
{
	int i,k;
	int a,b;

	/**--init --**/
	for (a=1,i=1 ; i<10 ; i++,a++) {
		for (b=1,k=1 ; k<10 ; k++,b++) {
			printf("%dx%d=%d\n",a,b,a*b);
		}
	}
	return 0;
}

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

using namespace std;

int main(){
    for(int i = 1; i < 10; i++){
        for(int j = 1; j < 10 ; j++){
            cout << i << "*" << j << "=" << i * j;
            if(i * j != 81){
                cout <<endl;
            }
        }
    }
    return 0;
}

C++: #include <iostream>

using namespace std;

int main(void){

  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 i,f;
	for(i=1;i<10;i++){
		for(f=1;f<10;f++){
			cout<<i<<"x"<<f<<"="<<i*f;
			cout<<endl;
		}
	}
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define REP(i,n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define REPR(i,n) for(int i=n; i>-1; --i)
#define ALL(a) (a).begin(),(a).end()
#define FILL(a,x); REP(i,sizeof(a)){ (a)[i]=(x); }
#define CINA(a,n); REP(i,(n)){ cin >> (a)[i]; }
#define FILL2(a,n,m,x); REP(i,(n)){ REP(j,(m)){(a)[i][j]=(x);} }
#define CINA2(a,n,m); REP(i,(n)){ REP(j,(m)){cin >> (a)[i][j];} }
#define Liny "Yes\n"
#define Linn "No\n"
#define LINY "YES\n"
#define LINN "NO\n"

#define umap unordered_map
//cout << setfill('0') << right << setw(4) << 12; // "0012"
int keta(ll x){ if(x<10){return 1;} else{return keta(x/10) + 1;}}
int keta_wa(ll x){ if(x<10){return x;} else{return keta_wa(x/10) + x%10;} }
int ctoi(char c){ return ( (c>='0' && c<='9')? c - '0': 0 );}
ll sum(ll a[],ll N){ return accumulate(a,a+N,0LL);}
ll gcd(ll a,ll b){if(a<b)swap(a,b); return b?gcd(b,a%b):a;}
ll lcm(ll a,ll b){if(a<b){swap(a,b);} return a/gcd(a,b)*b;}

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);
    } 
  }
}

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;
}
}
    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 <stdio.h>
int i, j;

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

int main(){

    for (int first=1; first<10; first++){
        for (int second=1; second<10; second++){
            cout << first << 'x' << second << '=' << first*second << 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++: /*
C++ ???????????????????????????????????¬??????
??????AOJ-ITP1??????????????????
*/
#define _USE_MATH_DEFINES

#include <iostream> // ?¨??????\??????
#include <fstream>  // ??????????????\??????
#include <string>   // ???????????¢???
#include <vector>   // ???????????????
#include <cmath>    // ??°??????
#include <iomanip>  // stream???????????¢???
#include <algorithm>// max??¢??°??????

using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::vector;        // ????´???°????????????????????????
using std::fixed;         // ???????????????????¨???????????????????????????????
using std::setprecision;  // ?????°????°???°?????\???????????°????????????????????¨????????\???

int main() {
	int row = 9;	// ???
	int col = 9;	// ???
	for (size_t i = 1; i <= row; i++)
	{
		for (size_t j = 1; j <= col; j++)
		{
			cout << i << "??" << j << "=" << i*j << endl;
		}
	}
	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(){
1*1;
1*2;
9*8;
9*9;

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

C++: #include <iostream>
#include <string>
#include <utility>
#include <algorithm>
#include <queue>
#include <map>

using namespace std;
typedef long long Int;
#define REP(i , x) for(int i = 0 ; i < x ; ++i)


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

	return 0;
}