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 <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <vector>
#include <algorithm>
#include <numeric>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <deque>
#include <functional>
#include <cctype>
#include <list>
#include <limits>
//#include <boost/multiprecision/cpp_int.hpp>

#define BIT(a) (1 << (a))
#define EPS (1e-10)

using namespace std;
//using namespace boost::multiprecision;

const long long MOD = 1000000007;
const int COUNTER_CLOCKWISE = 1;
const int CLOCKWISE = -1;
const int ONLINE_BACK = 2;
const int ONLINE_FRONT = -2;
const int ON_SEGMENT = 0;

class DisjointSet{
    public:
        vector<int> rank, p;

        DisjointSet(){}
        DisjointSet(int size){
            rank.resize(size, 0);
            p.resize(size, 0);
            for (int i = 0; i < size; i++) makeSet(i);
        }

        void makeSet(int x){
            p[x] = x;
            rank[x] = 0;
        }

        bool same(int x, int y){
            return findSet(x) == findSet(y);
        }

        void unite(int x, int y){
            link(findSet(x), findSet(y));
        }

        void link(int x, int y){
            if (rank[x] > rank[y]){
                p[y] = x;
            }else{
                p[x] = y;
                if (rank[x] == rank[y]){
                    rank[y]++;
                }
            }
        }

        int findSet(int x){
            if (x != p[x]){
                p[x] = findSet(p[x]);
            }
            return p[x];
        }
};

class Point{
    public:
    double x, y;

    Point(double x = 0, double y = 0): x(x), y(y) {}

    Point operator+(Point p){return Point(x + p.x, y + p.y);}
    Point operator-(Point p){return Point(x - p.x, y - p.y);}
    Point operator*(double a){return Point(a * x, a * y);}
    Point operator/(double a){return Point(x / a, y / a);}

    bool operator < (const Point &p) const {
        return y != p.y ? y < p.y : x < p.x;
    }

    double norm(){return x * x + y * y;}
};
typedef Point Vector;
typedef vector<Vector> Polygon;

double cross(Vector a, Vector b){
    return a.x*b.y - a.y*b.x;
}

double dot(Vector a, Vector b){
    return a.x * b.x + a.y * b.y;
}

int ccw(Point p0, Point p1, Point p2){
    Vector a = p1 - p0;
    Vector b = p2 - p0;
    if (cross(a, b) > EPS)return COUNTER_CLOCKWISE;
    if (cross(a, b) > -EPS)return CLOCKWISE;
    if (dot(a, b) < -EPS)return ONLINE_BACK;
    if (a.norm() < b.norm())return ONLINE_FRONT;

    return ON_SEGMENT;
}

Polygon andrewScan(Polygon s){
    Polygon u, l;
    if (s.size() < 3) return s;
    sort(s.begin(), s.end());
    u.push_back(s[0]);
    u.push_back(s[1]);
    l.push_back(s[s.size()-1]);
    l.push_back(s[s.size()-2]);

    for (size_t i = 2; i < s.size(); i++){
        for (size_t n = u.size(); n >= 2 && ccw(u[n-2], u[n-1], s[i]) == COUNTER_CLOCKWISE; n--){
            u.pop_back();
        }
        u.push_back(s[i]);
    }

    for (int i = (int)s.size() - 3; i >= 0; i--){
        for (size_t n = l.size(); n >= 2 && ccw(l[n-2], l[n-1], s[i]) == COUNTER_CLOCKWISE; n--){
            l.pop_back();
        }
        l.push_back(s[i]);
    }

    reverse(l.begin(), l.end());
    for (size_t i = u.size() - 2; i >= 1; i--) l.push_back(u[i]);

    return l;
}

long long mod_pow(long long x, long long n){
    long long res = 1;
    for(int i = 0;i < 60; i++){
        if(n >> i & 1) res = res * x % MOD;
        x = x * x % MOD;
    }
    return res;
}

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

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

C++: #include<iostream>
#include<iomanip>
#include<string>
#include<vector>
#include<set>
#include<algorithm>
#include<map>
#include<cmath>

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 <bits/stdc++.h>
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) {
    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; 10 > i; i++){
        for(int j = 1; 10 > j; j++){
            cout << i << "x" << j << "=" << i*j << endl;
        }
    }
}

C++: #include <iostream>
#include <queue>
#include <vector>
#include <set>
#include <algorithm>
#include <stdio.h>
#define int long long
inline int in() { int32_t x; scanf("%d", &x); return x ;}
using namespace std;
const int INF = 1e18;
const int MAX_N = 1e5 + 5;
int32_t main()
{
    for (int i = 1 ; i <= 9 ; i ++)
    {
        for (int x = 1 ; x <= 9 ; x ++)
        {
            printf("%d*%d=%d\n",i,x,i*x);
        }
    }
}

C++: #include<iostream>
using namespace std;
 
int main(){
 
 
for(int i = 0; i<9;i++){
for(int j=0;j<9;j++){
cout << i+1 << '×' << j+1 << '=' << (i+1)*(j+1) << endl;
}
}
 
return 0;
}

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

int main(){
	cin.tie(0),ios::sync_with_stdio(false);
	for(int i=1;i<=9;++i){
		for(int j=1;j<=9;++j){
			cout<<i<<"x"s<<j<<"="s<<i*j<<"\n"s;
		}
	}
}

C++: rgrgrgrgr

C++: #include <iostream>
#include <cstdio>

using namespace std;

int main(void)
{
	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(){
  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(){
    int i,j,k;
    for(i=1;i<=9;i++){
        for(j=1;j<=9;j++){
            cout << i << "X" << j << "=" << 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++: main(i){i=8;while(i++<89)printf("%dx%d=%d\n",i/9,i%9+1,i/9*(i%9+1));}

C++: #include<stdio.h>
int main(void)
{
	int a,b,c,x;
	for(a=1;a<=9;a++){
		for(b=1;b<=9;b++){
		c=a*b;
		printf("%dx%d=%d\n",a,b,c);
	}
	}
	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,c;
    char x='*',y='=';
    for(a=1;a<=9;a++)
        for(b=a;b<=9;b++)
        {
            c=a*b;
            cout<<a<<x<<b<<y<<c<<endl;
        }
    return 0;
}

C++: #include<iostream>
using namespace std;
int main (){
    int i,j;
    for(i=1;i<=9;i++){
        for(j=1;j<=9;j++){
            cout<<i<<"x"<<j<<"="<<i*j<<endl;
        }
    }
    return 0;
}