Go: package main

import (
	"fmt"
)

func main() {
	for i := 1; i <= 9; i++ {
		for j := 1; j <= 9; j++ {
			fmt.Printf("%dx%d=%d\n", i, j, i*j)
		}
	}
}

C++: #include <iostream>

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 <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 - 1, i * j);
		}
	}
	return 0;
}

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

int main(){

int  i , j;

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

return 0;
}

C++: //
// Write a program which prints multiplication tables in the following format:
//
#include <iostream>
using namespace std;

static const int EndRecursion = 9;

void inner(int left_side, int right_side)
{
    if (EndRecursion < right_side)
        return;

    cout << left_side << "x" << right_side << "=" << (left_side * right_side) << endl;
    inner(left_side, right_side + 1);
}

void outer(int left_side)
{
    if (EndRecursion < left_side)
        return;

    inner(left_side, 1);
    outer(left_side + 1);
}

void run()
{
    outer(1);
}

int main()
{
    // Start QQ
    run();
}

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

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

C++: #include <iostream>


int main(){

int i, j;

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

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

cout << 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;i++){
std::cout << i << 'x' << j << '=' i*j <<std::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;
}
}

}

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 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 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 <bits/stds++.h>
using namespace std;

int main() {
	for(int i=1;i<10;i++){
		for(int j=i;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(){
		
	for(int i=1; i<=9; i++){
		cout << "1x" << i << "=" << i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "2x" << i << "=" << 2*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "3x" << i << "=" << 3*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "4x" << i << "=" << 4*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "5x" << i << "=" << 5*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "6x" << i << "=" << 6*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "7x" << i << "=" << 7*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "8x" << i << "=" << 8*i << endl;
	}
	for(int i=1; i<=9; i++){
		cout << "9x" << i << "=" << 9*i << endl;
	}
	
	return 0;
}

C++: #include <iostream>
#include <string>
#include <algorithm>
#include <set>
#include <sstream>

using namespace std;

string expr(int x, int y) {
    stringstream ss;
    ss << x << "x" << y << "=" << x*y;
    return ss.str();
}

int main() {
    set<string> c;
    int n = 1e3;
    while (n--) {
        int x = rand() % 9 + 1;
        int y = rand() % 9 + 1;
        c.insert(expr(x, y));
    }
    for (set<string>::iterator it=c.begin(); it!=c.end(); ++it) {
        cout << *it << endl;
    }
    return 0;
}

C++: #include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<cstdio>
#include<cstring>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(n) rep(i,n)
#define all(n) n.begin(),n.end()
#define foreach(it,c) for(typeof(c.begin()) it=c.begin();it!=c.end();++it)

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

C++: #include<stdio.h>
main(i,j,k){for(i=0;i<81;i++)j=i/9+1,k=i%9+1,printf("%dx%d=%d\n",j,k,j*k);}

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

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

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>
#define rep(i,a,n) for(int i=a;i<n;i++)
using namespace std;

int main(){
   rep(i,1,10) rep(j,1,10) {
printf("%dx%d=%d\n",i,j,i*j);
}
    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("%d??%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 i = 1; i < 10; i++){
      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<stdio.h>
int  main(){
  int = a, b;
  for ( a = 1; a<=9 ; a++){
    for( b = 1; b<=9 ; b++){
      printf("ixj=%d\n", i*j);
    }
  }