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<<'*'<<j<<'='<<i*j<<endl; } return 0; }

C++: #include <bits/stdc++.h>
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(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 () {
    cout << a << "x" << b << "=" << a*b << endl;
    ++b;
    if ( b = 10;) {
      ++a;
      int b = 1;
    } else if ( a == 9 && b == 10;) {
      break;
    }

  }

  return 0;
}

C++: #include<stdio.h>
int main(void)
{
	int a,b,c,;
	scanf("%d %d",&a,&b);
	
	x=*;
	c=axb;
	printf("%d\n",c);
	return 0;
}

C++: #include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
using namespace std;
static const double EPS = 1e-5;
typedef long long ll;
#define FOR(i,n) for(i=0;i<n;i++)
#define rep(i,n) for(int i=0;i<n;i++)

int main(){
	rep(i,9){
		rep(j,9){
			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 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 << "\n";
    }
  }
  return 0;
}

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

#define fi first
#define se second
#define all(r) (r).begin(),(r).end()
#define vmax_v(ary) *max_element(all(ary))
#define vmin_v(ary) *min_element(all(ary))
#define vmax_id(ary) distance((ary).begin(),max_element(all(ary)))
#define vmin_id(ary) distance((ary).begin(),min_element(all(ary)))

using ll = int64_t;
using pll = pair<ll,ll>;
using vl = vector<ll>;

const ll INF=INT64_MAX;
const double EPS=1e-10;
const double PI=acos(-1.0);

void init(){cin.tie(0);ios::sync_with_stdio(false);}
//----------------------------------------------------

int main(){
    init();

    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<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++)
     cout<<i<<"x"<<j<<"="<<i*j<<endl;
return 0;
}

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

C++: 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include <queue>
#include <stack>
#include <cmath>
#include <cstdio>
#include <string>
#include <sstream>

using namespace std;

#define rep(i, n) for(int i = 0; i < (int)n; ++i)
#define repn(i, n) for(int i = 1; i <= (int)n; ++i)
#define pb push_back
#define lb lower_bound
#define mp make_pair
#define ite iterator
#define max2(x, y) ((x) > (y)) ? (x) : (y)
#define max3(x,y,z) max2((x), max2((y),(z)))
#define max4(v,w,x,y) max2(max2((v),(w)), max2((x),(y)))
#define min2(x, y) ((x) > (y)) ? (y) : (x)
#define min3(x,y,z) min2((x), min2((y),(z)))
#define min4(v,w,x,y) min2(min2((v),(w)), min2((x),(y)))
#define ul unsigned long
#define ull unsigned long long
#define INF 1000000007
#define MOD 1000000007
#define fs first
#define sd second

template<typename T>
bool elem(set<T> st, T val){
	return (st.find(val) != st.end());
}

template<typename T>
void printv(vector<T> vt){
    rep(i, vt.size() - 1)
        cout << vt[i] << " ";
    cout << vt[vt.size() - 1] << endl;
}

typedef vector<int> vint;
typedef vector<ul> vul;
typedef vector<ull> vull;
typedef pair<int, int> pii;

int main(void){
    rep(i, 9){
        rep(j, 9){
            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 i = 1; i<=9; i++)
	{
		for (int n = 1; n<= 9;n++)
		{
			cout<<i<<'x'<<n<<'='<<i*n<<endl;
		}
	}
	return 0;
}

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

int main(){
  
   for(int i=1;i<10;i++){
     for(int k=1;k<10;k++){
     
       cout << i << "x"<< k << "="<< i*k <<endl;
     }
   }

    return 0;
}

C++: #include <stdio.h>
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<stdio.h>

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

C++: #include <stdio.h>

int main(void){
    for(int i=1;i<10;i++){
        for(int j=1;j<10;j++){
            printf("%dx%d=%d\n",i,j,i*j);
        }
    }
}

C++: - submit, private