Go: package main

import "fmt"

func main() {
    var max_num = 9
    for i := 1; i<= max_num; i++{
        for j := 1; j<= max_num; j++{
            fmt.Printf("%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(){
	int k;
	for(int i = 1 ; i < 10 ; i++){
		for(int j = 1 ; j < 10 ; j++){
			k = i * j;
			cout << i << "x" << j << "=" << k << 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 <string>
using namespace std;

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

C++: #include<stdio.h>

int main(){
	while(true);
	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 < 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(){int i,j=1;while(j<=9){for(i=1;i<10;i++){printf("%dx%d=%d\n",j,i,i*j);}j++;}

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

    return 0;
}

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

int main(void){
    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++: #include <iostream>



using namespace std;



int main(){
  for(int i=1;i<10;i++){
    for(int j=1;j<10;j++){
      std::cout << i <<"??"<<j<<"="<<i*j<< '\n';
    }
  }
  return 0;
}

C++: #include<iostream>

int main(){
	int a,b;
	for(a=1;a<=9;a++){
		for(b=1;b<=9;b++){
			std::cout<<a<<"x"<<b<<"="<<a*b<<std::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("%d",i*j);
}
}
}

C++: #include<stdio.h>
int main(void){

  int i;
  for(i=1;i<10;i++){
    printf("%d??1=%d\n",i,i*1);
    printf("%d??2=%d\n",i,i*2);
    printf("%d??3=%d\n",i,i*3);
    printf("%d??4=%d\n",i,i*4);
    printf("%d??5=%d\n",i,i*5);
    printf("%d??6=%d\n",i,i*6);
    printf("%d??7=%d\n",i,i*7);
    printf("%d??8=%d\n",i,i*8);
    printf("%d??9=%d\n",i,i*9);

  }


  return 0;
}

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

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) << std::endl;
        }
    }

    return 0;
}

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

int main() {
vector< int > test = {0,1,2,3};
for(int x : test) { cout << x << endl; }
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 <stdio.h>

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

C++: #include <iostream>

int main(int argc, char **argv){
	for(int i = 1; i < 10; i++){
		for(int j = 1;j < 10; j++){
			std::cout << i << "x" << j << "=" << i * j;
			if(!(i == 9 && j == 9)){
				std::cout << std::endl;
			}
		}
	}
}

C++: #include <stdio.h>
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++: /*
 *  Author: mizo0203
 *  Problem: 0001
 *  Status: Time Limit Exceeded
 *  Submission Date: 2012/04/14 23:23:19
 */
#include <stdio.h>

int n; // (0 < n <= 20)
int hx, hy, dx, dy;
int cx[20], cy[20]; // (-1000 <= h, d, c <= 1000)

void init() {
  // 事前処理なし
}

bool input() {
  // 入力なし
  return false;
}

int main() {
  int i, j;

  init();
  while (input()) {
  }

  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 i, j;

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

for (j = 1; i < 9; i++){

printf ("%dx%d=%d\n",i,j,i*j);

}

}

return 0;

}

C++: #include<cstdio>
main(){for(int i=1,j;i<=9;i++)for(j=1;j<=9;)printf("%dx%d=%d\n",i,j++,i*j);}

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

int main() {

   for(int i = 1;i < 10; i++) {
     for(int j = 1; j < 10; j++) {
       cout << j << 'x' << i << '=' << j * i << endl;

   return 0;
}

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

int main(void){
    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>
using namespace std;

int main(){
   for(int x=1;x<10;x++){
	 for(int y=1;y<10;y++){
   		cout << x<<"*"<<y<<"="<<x*y << endl;
	 }
	}
	return 0;
}