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

C++: #include<stdio.h>

int main(void)
{
	printf("1x1=1\n");
	printf("1x2=2\n");
	printf("1x3=3\n");
	printf("1x4=4\n");
	printf("1x5=5\n");
	printf("1x6=6\n");
	printf("1x7=7\n");
	printf("1x8=8\n");
	printf("1x9=9\n");
	printf("2x1=2\n");
	printf("2x2=4\n");
	printf("2x3=6\n");
	printf("2x4=8\n");
	printf("2x5=10\n");
	printf("2x6=12\n");
	printf("2x7=14\n");
	printf("2x8=16\n");
	printf("2x9=18\n");
	printf("3x1=3\n");
	printf("3x2=6\n");
	printf("3x3=9\n");
	printf("3x4=12\n");
	printf("3x5=15\n");
	printf("3x6=18\n");
	printf("3x7=21\n");
	printf("3x8=24\n");
	printf("3x9=27\n");
	printf("4x1=4\n");
	printf("4x2=8\n");
	printf("4x3=12\n");
	printf("4x4=16\n");
	printf("4x5=20\n");
	printf("4x6=24\n");
	printf("4x7=28\n");
	printf("4x8=32\n");
	printf("4x9=36\n");
	printf("5x1=5\n");
	printf("5x2=10\n");
	printf("5x3=15\n");
	printf("5x4=20\n");
	printf("5x5=25\n");
	printf("5x6=30\n");
	printf("5x7=35\n");
	printf("5x8=40\n");
	printf("5x9=45\n");
	printf("6x1=6\n");
	printf("6x2=12\n");
	printf("6x3=18\n");
	printf("6x4=24\n");
	printf("6x5=30\n");
	printf("6x6=36\n");
	printf("6x7=42\n");
	printf("6x8=48\n");
	printf("6x9=54\n");
	printf("7x1=7\n");
	printf("7x2=14\n");
	printf("7x3=21\n");
	printf("7x4=28\n");
	printf("7x5=35\n");
	printf("7x6=42\n");
	printf("7x7=49\n");
	printf("7x8=56\n");
	printf("7x9=63\n");
	printf("8x1=8\n");
	printf("8x2=16\n");
	printf("8x3=24\n");
	printf("8x4=32\n");
	printf("8x5=40\n");
	printf("8x6=48\n");
	printf("8x7=56\n");
	printf("8x8=64\n");
	printf("8x9=72\n");
	printf("9x1=9\n");
	printf("9x2=18\n");
	printf("9x3=27\n");
	printf("9x4=36\n");
	printf("9x5=45\n");
	printf("9x6=54\n");
	printf("9x7=63\n");
	printf("9x8=72\n");
	printf("9x9=81\n");
	return 0;
}

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

int main() {
	int a,b,c;
	for(a = 1;a <= 9;a++) {
		for(b = 1;b <= 9;b++) {
			c = a * b;
			cout << a << "x" << b << "=" << c << endl;
		}
	}
	return 0;
}

C++: #include<stdio.h>
#define FOR( i,a ) for( i = 0;i < a;i++ )
int main(){
　int i = 0,j = 0;
    FOR( i,10 ){ FOR( j,10 ){ printf( "%dx%d=%d",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 <iostream>
using namespace std;

int main() {
  int a, b;
  for (int i=11;i<100;i++) {
    a = i / 10;
    b = i % 10;
    if (b != 0) {
      cout << a << "x" << b << "=" << a * b << endl;
    }
  }
  return 0;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int t=90000;
	for(int i=t;i;i--){
		for(int j=max(i,9);j;j--){
			if(i<10&&j<10)cout<<10-i<<"x"<<10-j<<"="<<(10-i)*(10-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 <iostream>
using namespace std;
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));
            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++){
      for(int j=1; j<=9; j++){
        printf("%d??%d=%d",i,j,i*j);
      }
    }
    return 0;
}

C++: #include<stdio.h>
char 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 < 10; ++i)
	{
		for (int j = 1; j < 10; ++j)
		{
			cout << i << "x" << j << "=" << i*j << endl;
		}
	}
	return 0;
}

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

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;
}