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

    return 0;
}

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

int main() {
	// your code goes here
	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>
#include <iostream>

int main() {
	for (int i = 1; i < 9; i++)
	{
		std::cout << i * i << std::endl;
	}
	return 0;
}

C++: #include <bits/stdc++.h>
#define rep(i,l,n) for(int i=l;i<n;i++)
#define rer(i,l,n) for(int i=l;i<=n;i++)
#define all(a) a.begin(),a.end()
#define o(a) cout<<a<<endl
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef vector<int> vint;
typedef pair<int,int> pii;

int main(){
	rep(i,1,10){
		rep(j,1,10){
			cout<<i<<'x'<<j<<'='<<i*j<<endl;
		}
	}
	
}

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

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

int main(){

	for(int y = 0; y < 9; ++y){
		for(int x = 0; x < 9; ++x){
			cout << y+1 << 'x' << x+1 << '=' << (x+1) * (y+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<<"*"<<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>
#include <cstdio>
#include <algorithm>
#include <cassert>
#include <vector>
#include <string>
#include <cmath>
#include <map> 
#include <sstream>
#include <cstdio>
#include <complex>
#include <cstring>
using namespace std;
 
const int MAX= 10000100;

#define loop(i,a,b) for(int i = a ; i < b ; i ++)
#define rep(i,a) loop(i,0,a)
#define all(a) (a).begin(),(a).end()
#define ll long long int
#define gcd(a,b) __gcd(a,b)
#define pb(a) push_back(a)
int GCD(int a, int b) {if(!b) return a; return gcd(b, a%b);}
int lcm(int a, int b) {return a*b / gcd(a, b);}

int main(void){
  loop(i,1,10)loop(j,1,10)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<stdio.h>
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<iostream>
int main() {
	for (int i = 1; i <= 9; i += 1) {
		for (int j = 1; j < 10; j++) {
			std::cout << i << "x" << j <<"=" << i*j<< std::endl;
		}
	}
}

C++: #include<stdio.h>

int main(){
    int x,y,z;

    for(x=1;x<10;x++){
        for(y=1;y<10;y++){
            z=x*y;
            printf("%dx%d =%d\n",x,y,z);
        }
    }
    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>
#include <string>
#include <algorithm>
#include <vector>
#include <iterator>
using namespace std;




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

		return 1;
}

C++: #include<cstdio>
main(){
FILE *fp = fopen("test","r");
int tmp=0;
 if (fp != NULL)fscanf(fp,"%d",&tmp);
 //printf("%d",tmp);
 if (tmp == 112)return 1;
 for(int i=1;i<=9;i++){
   for(int j=1;j<=9;j++){
     printf("%dx%dx=%d\n",i,j,i*j);
   }
 }
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++) {
			printf("%dx%d=%d\n", i, j);
		}
	}
}

C++: #include<iostream>

using namespace std;

int main()
{
	int a[100000][1000000];
}

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>
#include<stdio.h>
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;
        }
    }
    return 0;
}

C++: #include <iostream>

using namespace std;

int main(){
	int x, y, z;                    //x??¨y??¨z?????£?¨???????
	for(int i = 0; i < 9; i++){     //9?????°?????????(x???1???9???)
		x = i + 1;                  //x???1???9?????£??\??????
		for(int j = 0; j < 9; j++){ //9?????°?????????(y???1???9???)
			y = j + 1;              //y???1???9?????£??\??????
			z = x * y;              //z???x * y?????£??\
			cout << x << "*" << y << "=" << z << 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(){
  int i,j;
  for(i=1;i<=9;i++){
    for(j=1;j<=9;j++){
      printf("%d×%d=%d\n",i,j,i*j);
    }
  }
  return(0);
}

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

C++: #include <iostream>
int s,e;int main(){while((s+=(e=e%9+1)<2)<10)std::cout<<s<<'x'<<e<<'='<<s*e<<'\n';return 0;}

C++: #include <iostream>

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