Go: package main

import (
	"fmt"
)

func main() {
	for i := 1; i < 10; i++ {
		for j := 1; j < 10; j++ {
			fmt.Printf("%dx%d=%d\n", i, j, i*j)
		}
	}
}

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;
}