Go: // 九九を出すだけ
package main
import (
	"fmt"
	"os"
	"bufio"
)
var out = bufio.NewWriter(os.Stdout)

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

C++: #include <iostream>
#include <algorithm>
#include <stack>
#include <cstdio>
using namespace std;
// int a[10];
// bool ans;
// void dfs(int i,int r,int l){
// 	if(i==10)ans=1;
// 	if(ans)return;
// 	if(a[i]<r&&a[i]<l)return;
// 	if(r<a[i])dfs(i+1,a[i],l);
// 	if(l<a[i])dfs(i+1,r,a[i]);

// }
// int main(){
// 	int t;
// 	cin>>t;
// 	while(t--){
// 		ans=0;
// 		for(int i=0;i<10;i++)cin>>a[i];
// 		dfs(0,0,0);
// 		if(ans)cout<<"YES"<<endl;
// 		else cout<<"NO"<<endl;
// 	}
// }

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++: #inclde<iostream>
using namespace std;
int main()
{int a,b,c,i
for(i=1;i<10;i++)
{c=1*i
cout<<"1x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=2*i
cout<<"2x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=3*i
cout<<"3x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=4*i
cout<<"4x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=5*i
cout<<"5x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=6*i
cout<<"6x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=7*i
cout<<"7x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=8*i
cout<<"8x"<<i<<"="<<c<<endl;
}
for(i=0;i<;i++)
{c=9*i
cout<<"9x"<<i<<"="<<c<<endl;
}

return 0
}

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

int main(){

for(int n=1; n<=9; n++)
 for(int m =1; m<=9; m++)
  cout << m << "x" << n << "=" <<m*n <<endl; 

    return 0;
}

C++: #include  <cstdio>
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);
}

C++: #include<bits/stdc++.h>
using namespace std;
int a,b;
int main(){
for(int i=1;i<=9;i++)
    for(int j=1;j<=9;j++)
    cout << i << 'x' << 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>
using namespace std;

int main() {
	for (int _____ = 1; _____ <= 9; _____++) {
		for (int ____ = 1; ____ <= 9; ____++) {
			printf("%dx%d=%d\n", _____, ____, _____*____);
		}
	}
}

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


int main()
{
	for (int i = 1; i < 10; i++)
	{
		for (int n = 1; n < 10; n++){
			cout << i << "x" << n << "=" << i*n << 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 << '\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 << "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++){
        std::cout<<i<<"x"<<j<<"="<<i*j<<std::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++: null

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() {
        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>
#include <cstdlib>
#include <math.h>
#include <vector>
#include <queue>
#include <algorithm>
#include <iterator>
#include <sstream>
#include <string>
using namespace std;
#define rep(I,N) for(int I = 0; I < (int)(N); I++)
#define FIN(V) cout<<V<<endl
#define pb push_back
#define INF (1 << 30)
typedef pair<int, int> P;
typedef long long ll;
typedef priority_queue<int> pq;

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

C++: #include <iostream>

using namespace std;
int main()
{
    int i=1;
    while(i<10)
    {
        for(int a=1;a<10;a++)
        {    
            
        cout<<i<<"x"<<a<<"="<<i*a<<endl;
            
        }
    i=i+1;
    }
}

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

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

  return 0;
}

C++: #include<stdio.h>
main(){
  int i,j,multiplication;
  i=1;
  j=1;
  multiplication=0;
  while(i<=9){
    multiplication=i*j;
    printf("%d x %d = %d\n",i,j,multiplication);
    j+=1;
    if(j == 10) {
      i+=1;
      j=1;
    }
  }
 
}

C++: #include <iostream>
int main() {
 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 <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(){
	for(int i=1;i<10;++i){
		for(int j=1;j<10a;++j)
			cout << i << "*" << j << "=" << i*j << endl;
	}
	return 0;
}

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