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(){

	cout<<"1x1=1"<<endl;
	cout<<"1x2=2"<<endl;
	cout<<"1x3=3"<<endl;
    cout<<"1x4=4"<<endl;
	cout<<"1x5=5"<<endl;
	cout<<"1x6=6"<<endl;
	cout<<"1x7=7"<<endl;
	cout<<"1x8=8"<<endl;
	cout<<"1x9=9"<<endl;
	cout<<"2x1=2"<<endl;
	cout<<"2x2=4"<<endl;
	cout<<"2x3=6"<<endl;
	cout<<"2x4=8"<<endl;
	cout<<"2x5=10"<<endl;
	cout<<"2x6=12"<<endl;
	cout<<"2x7=14"<<endl;
	cout<<"2x8=16"<<endl;
	cout<<"2x9=18"<<endl;
	cout<<"3x1=3"<<endl;
	cout<<"3x2=6"<<endl;
	cout<<"3x3=9"<<endl;
	cout<<"3x4=12"<<endl;
	cout<<"3x5=15"<<endl;
	cout<<"3x6=18"<<endl;
	cout<<"3x7=21"<<endl;
	cout<<"3x8=24"<<endl;
	cout<<"3x9=27"<<endl;
	cout<<"4x1=4"<<endl;
	cout<<"4x2=8"<<endl;
	cout<<"4x3=12"<<endl;
	cout<<"4x4=16"<<endl;
	cout<<"4x5=20"<<endl;
	cout<<"4x6=24"<<endl;
	cout<<"4x7=28"<<endl;
	cout<<"4x8=32"<<endl;
	cout<<"4x9=36"<<endl;
	cout<<"5x1=5"<<endl;
	cout<<"5x2=10"<<endl;
	cout<<"5x3=15"<<endl;
	cout<<"5x4=20"<<endl;
	cout<<"5x5=25"<<endl;
	cout<<"5x6=30"<<endl;
	cout<<"5x7=35"<<endl;
	cout<<"5x8=40"<<endl;
	cout<<"5x9=45"<<endl;
	cout<<"6x1=6"<<endl;
	cout<<"6x2=12"<<endl;
	cout<<"6x3=18"<<endl;
	cout<<"6x4=24"<<endl;
	cout<<"6x5=30"<<endl;
	cout<<"6x6=36"<<endl;
	cout<<"6x7=42"<<endl;
	cout<<"6x8=48"<<endl;
	cout<<"6x9=54"<<endl;
	cout<<"7x1=7"<<endl;
	cout<<"7x2=14"<<endl;
	cout<<"7x3=21"<<endl;
	cout<<"7x4=28"<<endl;
	cout<<"7x5=35"<<endl;
	cout<<"7x6=42"<<endl;
	cout<<"7x7=49"<<endl;
	cout<<"7x8=56"<<endl;
	cout<<"7x9=63"<<endl;
	cout<<"8x1=8"<<endl;
	cout<<"8x2=16"<<endl;
	cout<<"8x3=24"<<endl;
	cout<<"8x4=32"<<endl;
	cout<<"8x5=40"<<endl;
	cout<<"8x6=48"<<endl;
	cout<<"8x7=56"<<endl;
	cout<<"8x8=64"<<endl;
	cout<<"8x9=72"<<endl;
	cout<<"9x1=9"<<endl;
	cout<<"9x2=18"<<endl;
	cout<<"9x3=27"<<endl;
	cout<<"9x4=36"<<endl;
	cout<<"9x5=45"<<endl;
	cout<<"9x6=54"<<endl;
	cout<<"9x7=63"<<endl;
	cout<<"9x8=72"<<endl;
	cout<<"9x9=81"<<endl;
    
	return 0;

}

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

int main(){
	for(int i=1;i<=9;i++){
		for(int k=1;k<=9;k++){
			cout<<i<<"x"<<k<<"="<<i*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>
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=0;i++<100;)cout<<(int)i/10<<"x"<<i%10<<(int)i/10*i%10<<endl;
return 0;
}

C++: for i in 1..9 do
	for j in 1..9 
		print(i, "x", j, "=", i*j, "\n")
	end
end

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

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

#define FOR(i,l,r) for(int i = (l);i < (r);i++)
#define ALL(x) (x).begin(),(x).end()
template<typename T> bool chmax(T& a,const T& b){return a < b ? (a = b,true) : false;}
template<typename T> bool chmin(T& a,const T& b){return b < a ? (a = b,true) : false;}
typedef long long ll;

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

	return 0;
}

C++: #include<cstdio>
main(){for(int i,j;i++>8?i=j++<9:1;)printf("%dx%d=%d\n",j,i,i*j);}

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

int main(){
int a = 1,b = 1,c;
while(a != 9 and b != 9){
c=a*b;
cout<<a<<"x"<<b<<"="c<<endl;
b++;
if(b == 10){
a++;
b = 1;
}

}
    return 0;
}

C++: #include <studio.h>

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

C++: #include<stdio.h>
int main()
{
     int i,j;
     for(i=1;i<10;i++)
        for(j=1;j<10;j++)
           printf("%d*%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, i * j );
		}
	}
	return 0;
}

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

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

C++: #include <stdio.h>
int main(){
    for (int i = 1; i < 10; i++) {
        for (int j = 1; j < 10; ++j) {
            printf("%d??%d=%d\n",i,j,i*j);
        }
    }
    return 0;
}

C++: #include<stdio.h>
#include<iostream>
using namespace std;
int main()
{
    int i,j,c;
    for(i=1;i<10;i++)
    {
        for(j=1;j<10;j++)
        {
            c=i*j;
            printf("%d*%d=%d\n",i,j,c);
        }
    }
    return 0;
}

C++: #include <iostream>

using namespace std;

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

	return 0;
}

C++: #include<cstdio>
main()
{
for(int i = 1; i < 10; ++i){
for(int j = 1; j < 10; ++j){
printf("%dx%d=%d\n", i,j,i*j-1);
}
}
return 0;
}