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 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 };

#ifdef _DEBUG
#define dump(x) cout << #x << " = " << (x) << "\n"
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n"
#else
#define dump(x)
#define debug(x)
#endif


int main() {
#ifdef _DEBUG
	printf( "Debug Mode\n" );
#endif
	for ( int i = 1; i < 10; i++ ) {
		for ( int j = 1; j < 10; j++ ) {
			dump( i );
			dump( 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>
#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(void){
    int x,y;
    x=0;
    while(1){
        x=x+1;
        y=x*x;
        cout<<x<<"*"<<x<<"="<<y<<endl;
        if(x>=9){
            break;
        }
    }
    
}

C++: #include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <queue>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>
#include <stdio.h>

using namespace std;

//conversion
//------------------------------------------
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();}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<int, PII> TII;
typedef long long LL;
typedef vector<LL> VLL;

//container util

//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#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 SORT(c) sort((c).begin(),(c).end())
#define MT(a,b,c) MP(a, MP(b, c))

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

int main(void){
	REP(i, 9){
		REP(j, 9){
			char str[256];
			sprintf(str, "%dx%d=%d", i, j, i*j);
		}
	}
	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;
}

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;
string a[8]={"hao","hao","xue","xi","tian","tian","xiang","shang"};
int main() {
	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<<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++){
      printf("%dx%d=%d\n",i,j,i*j);
    }
  }
  return 0;
}

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

C++: 
#include <cstdio>

int main(void) 
{
    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(){

int a=1;
int b=1;

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

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

cout<<a<<"x"<<b<<"="<<a*b<<"\n";


}

}



    return 0;
}

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

int main(){
	for(int i=0; i<9; i++){
		for(int j=0; j<9; j++){
			cout << i+1 << "x" << j+1 << "=" << (i+1)*(j+1) << 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 <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 i,j;
    for(i=1;i<10;i++)
         for(j=1;j<10;j++)
              cout<<i<<'<<j<<i*j<<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);
}

C++: #include<iostream>
#include<string>
#include<vector>
#include<cmath>
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){
    for(int i = 0; i < 9; i++){
        for(int j = 0; j < 9; j++){
            printf("%dx%d=%d",i + 1,j + 1,(i + 1)*(j + 1));
        }
    }
    return 0;
}

C++: for i in 1..9 do
	for j in 1..9 do
		print(i,"x",j,"=",i*j,"\n")
	end
end

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

C++: int main()
{
	int a, b;
	
	
	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>

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