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 <bits/stdc++.h>
using namespace std;
#define FOR(i, s, n) for(int i = s; i < (int)n; i++)
#define per(i, n) for(int i = n; i >= 0; i--)
#define ROF(i, s, n) for(int i = s; i >= (int)n; i--)
#define FORIT(i, A) for (auto i : A)
#define PRINT(x) cout << (x) << "\n"
#define ALL(a) (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define MP make_pair
#define EACH(i, n) for (__typeof((n).begin()) i = (n).begin(); i != (n).end(); ++i)
#define SZ(a) int((a).size())
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define CLR(a) memset((a), 0 ,sizeof(a))
#define NCLR(a) memset((a), -1 ,sizeof(a))
#define dump(x) cout << #x << " = " << (x) << "\n";
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n";
#define sq(n) (n) * (n)
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef priority_queue<int> maxpq;
typedef priority_queue< int, vector<int>, greater<int> > minpq;
typedef complex<double> P;
static const double EPS = 1e-10;
static const double PI = acos( -1.0 );
static const int mod = 1000000007;
static const int INF = 1 << 29;
static const LL LL_INF = 1152921504606846976;
static const int dx[] = { -1, 0, 1, 0, 1, -1, 1, -1 };
static const int dy[] = { 0, -1, 0, 1, 1, 1, -1, -1 };


int main() {
#ifdef _DEBUG
	printf( "debug\n" );
#endif
	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++){
 for(int j=1;j<10; j++){
   cout << i <<"x" << j << "=" <i*j << endl; 
}
}
}

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


int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	for(int i=1;i<10;i++){
		for(int j=1;j<10;j++){
			cout<<i<<"x"<<j<<"="<<i*j<<"\n";
		}
	}
	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;
		}
	}
}

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

int main() {
        int m1, m2;
        m1 = 1;
        m2 = 1;
        for (m1; m1 < 10; m1++) {
                for (m2; m2 < 10; m2++) {
                        cout << m1 << "x" << m2 << "=" << m1*m2 << endl;
                }
m2 = 1
        }
        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 a;
    for(int i=1;i<10;i++){
    for(int j=1;j<10;j++){
    a=i*j;
    cout<<i<<'*'<<j<<'='<<a<<'\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<<"*"<<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(){
  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<cstdio>
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()
{
int a; scanf("%d", &a);
}

C++: #include<iostream> 
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(){
	int i,j;
	for (i = 1; i <= 9; i++){
		for (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++){
for(int j=0;j<10;j++){

cout<<i<<'x'<<j<<'='<<i*j<<endl;



}

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

using namespace std;

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

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<string> vs;
typedef pair<int, int> pii;
typedef long long ll;

#define all(a)  (a).begin(),(a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define pb push_back
#define mp make_pair
#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 range(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n)  range(i,0,n)
#define clr(a,b) memset((a), (b) ,sizeof(a))
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

const double eps = 1e-10;
const double pi  = acos(-1.0);
const ll INF =1LL << 62;
const int inf =1 << 24;

int main(void){
    range(i, 1, 10){
        range(j, 1, 10){
            cout << i << "*" << j << "=" << i * j << endl;
        }
    }

	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 << "x" << y << "=" << x*y << '\n';
		}
	}

	return 0;
}

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

int main(int,char**){
	for(int i(1);i<=9;++i)
		for(int j(1);j<=9;++j) std::cout << i << 'x' << j << '=' << i*j << std::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", i, 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 main(void){
  int num=0;
  int i=0;
  for(i=1;i<10;i++){
    num=i*i;
    printf("%dx%d=%d\n", i, i, num);
  }
  return 0;
}

C++: #include <iostream>
#include <cstdio>
#include <vector>
#include <list>
#include <algorithm>
#include <cmath>
#include <stack>
#include <set>
using namespace std;

#define REP(i,n) for(int (i)=0; (i)<(n); (i)++)
#define FOR(i,a,b) for(int (i)=(a); (i)<(b); (i)++)
#define PUSH(n,v) for(int i=0; i<(n); i++) {int j; cin >> j; v.push_back(j);}
#define ALL(v) v.begin(), v.end()

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


    return 0;
}

C++: class Main{
    public static void main(String[] a){
int d;
for(int x = 0,x < 10,x++){
for(int y = 0,y < 10,y++){
d = x * y;
System.out.print(x + "x" + y = d);
            }
        }

    }
}