Go: package main

import "fmt"

func main() {
    sayHello()
}

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

Python: print ("1x1=1")
print ("1x2=2")
print ("1x3=3")
print ("1x4=4")
print ("1x5=5")
print ("1x6=6")
print ("1x7=7")
print ("1x8=8")
print ("1x9=9")
print ("2x1=2")
print ("2x2=4")
print ("2x3=6")
print ("2x4=8")
print ("2x5=10")
print ("2x6=12")
print ("2x7=14")
print ("2x8=16")
print ("2x9=18")
print ("3x1=3")
print ("3x2=6")
print ("3x3=9")
print ("3x4=12")
print ("3x5=15")
print ("3x6=18")
print ("3x7=21")
print ("3x8=24")
print ("3x9=27")
print ("4x1=4")
print ("4x2=8")
print ("4x3=12")
print ("4x4=16")
print ("4x5=20")
print ("4x6=24")
print ("4x7=28")
print ("4x8=32")
print ("4x9=36")
print ("5x1=5")
print ("5x2=10")
print ("5x3=15")
print ("5x4=20")
print ("5x5=25")
print ("5x6=30")
print ("5x7=35")
print ("5x8=40")
print ("5x9=45")
print ("6x1=6")
print ("6x2=12")
print ("6x3=18")
print ("6x4=24")
print ("6x5=30")
print ("6x6=36")
print ("6x7=42")
print ("6x8=48")
print ("6x9=54")
print ("7x1=7")
print ("7x2=14")
print ("7x3=21")
print ("7x4=28")
print ("7x5=35")
print ("7x6=42")
print ("7x7=49")
print ("7x8=56")
print ("7x9=63")
print ("8x1=8")
print ("8x2=16")
print ("8x3=24")
print ("8x4=32")
print ("8x5=40")
print ("8x6=48")
print ("8x7=56")
print ("8x8=64")
print ("8x9=72")
print ("9x1=9")
print ("9x2=18")
print ("9x3=27")
print ("9x4=36")
print ("9x5=45")
print ("9x6=54")
print ("9x7=63")
print ("9x8=72")
print ("9x9=81")

Python: for i in range(1, 10, 1):
    for j in range(1, 10, 1):
        print(i, "*", j, "=", i * j, sep='')

Python: for i in range(0,9):
    for j in range(0,9):
        print("{0}*{1}={2}".format(i+1,j+1,(i+1)*(j+1)))

Python: for i in range(1, 10):
    for j in range(1, 10):
        print("{}x{}={}".format(i, j, i*j))

Python: for i in range(1,10):
	for j in range(1,10):
		print(str(i)+'x'+str(j)+'='+str(i*j))

Python: for i in range(100):
    for j in range(100):
        fmt = format("{0}x{1}={2}")
        g = fmt.format(i, j, i*j)
        print(g)

Python: for i in range(1,10):
    for j in range(1,10):
        print("{:d}x{:d}={:d}".format(i,j,i*j))

Python: for i in range(1, 10):
    for j in range(1, 10):
        print(i, "x", j, "=", i * j, sep="")

Python: for i in range(0,10):
    for j in range(0,10):
        print("%sx%s="%(i,j),i*j)

Python: for i in range(1,10):
    for j in range(1,10):
        ans=i*j
        print(f'{i}x{j}={ans}')

Python: for i in range(0,10):
    for j in range (0,10):
        print(str(i) + 'x' + str(j) + '=' + str(i*j))

Python: for i in range(1,10):
    for j in range(1,10):
        print("%d??%d=%d" %(i,j,i*j))

Python: def printQQ():
  for i in range(1,10):
    for j in range(1,10):
      print("{}x{}={}".format(i, j, i*j))

if __name__ == "__main__":
  printQQ()

Python: import itertools
for i,j in itertools.product(range(1,10), range(1,10)):
    print('{}x{}={}'.format(i,j,i*j))

Python: for x in range(1,10):
    for y in range(1,10):
        print ("%dx%d=%d" % (x, y, x*y))

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

Python: for i in range(1, 10):
	for j in range(1, 10):
		print('%dx%d=%d' % (i, j, i*j))

C++: #include<iostream>
using namespace std;
int main()
{  
	int a=1,b=1;int s;
	for(;a<=9;a++)
	{
		b=1;
		for(;b<=9;b++)
		{ 
			s=a*b;
			printf("%ix%i=%i\n",a,b,s);
		}
		
	}
	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 << "×" << j << "=" << i*j << endl;
		}
	}
	
	return 0;
}

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

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";
}

C++: #include <stdio.h>

int main() {

        int i, j ;

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

}

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

int main(){

    for(int a=1;a<=9;a++)
      for(int b=1;b<=9;b++)
        cout<<a<<"x"<<b<<"="<<a*b<<endl;

    return 0;
}

C++: #include <iostream>
using namespace std;
int main()
{
     long 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++: //#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define rep(i, n) for(int i=0; i<n; ++i)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using namespace std;
using ll = int64_t;
using ld = long double;
using P = pair<int, int>;
using vs = vector<string>;
using vi = vector<int>;
using vvi = vector<vi>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQG = priority_queue<T, vector<T>, greater<T> >;
const int INF = 100010001;
const ll LINF = (ll)INF*INF*10;
template<typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true);}
template<typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true);}
template<typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) { return is >> p.first >> p.second;}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p) { return os << p.first << ' ' << p.second;}

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

C++: //
//  main.cpp
//  JOI
//
//  Created by Kate Tada on 2016/06/08.
//  Copyright ?? 2016??´ aaa. All rights reserved.
//

#include <iostream>
using namespace std;
int main(int argc, const char * argv[])
{
    for (int a = 1; a < 10; a++)
    {
        for (int b = 1; b < 10; b++)
        {
            cout << a <<"x"<< b << "=" << a*b <<endl;
        }
    }
}

C++: #include<iostream>

using namespace std;

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 <cstdio>
using namespace std;
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 < 10; ++i) {
        for (int j = 1; j < 10; ++j) {
            cout << i << 'x' << j << '=' << i * j << '\n';
        }
    }
    return 0;
}

C++: #include <iostream>
#include <cstdio>
 
using namespace std;
 
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() {
	int a,b;
	for(int i=1;i<=9;i++){
		a=i;
		for(int j=1;j<=9;j++){
			b=j;
			cout<<a*b<<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;
}

C++: #include<bits/stdc++.h>
using namespace std;

int main(){
  for(int a=1;a<=9;a++){
    for(int b=1;b<=9;b++){
      int c=a*b;
      printf("%d\n",a+"x"+b=c)
    }
  }
  return 0;
}

C++: #include<stdio.h>

int main(){
	int i,j;

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