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>

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 << '\n';
		}
	}
	return 0;
}

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",i,x,i*x);
            cout << i << "x" << x << "=" << i * x;
            cout << endl;
        }
    }
}

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<< "\n";
    }
}
    cout << endl;
    return 0;
}

C++: #include<stdio.h>
int main(){int i,x,y;for(i=0;i<81;i++){x=i/9+1;y=i%9+1;printf("%dx%d=%d\n",x,y,x*y);}returnツ　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 <string>
#include <algorithm>
#include <cfloat>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <memory>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <utility>
#include <vector>


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; 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(){
	int x,y,z,w;
	for (x = 1, z = 1; z <= 9; z++, x++){
		for (y = 1, w = 1; w <= 9; w++, y++){
			cout << x << "x" << y << "=" << x * y << endl;
		}
	}








	return 0;
}

C++: #include<bits/stdc++.h>
#include<vector>
#include<list>
#include<stack>
#include<queue>
#include<algorithm>
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);
        }
    }
    return 0;
}

C++: 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=10;i<100;i++)cout<<(int)(i/10)<<"x"<<i%10<<(int)(i/10)*(1%10)<<endl;
return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <vector>
#include <cstdio>
#include <string>
#include <set>
#include <queue>
#include <stack>
#include <cmath>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long > vll;
typedef vector< vi > vvi;
int main() {
	for (int i = 1; i <= 9; i++) {
		for (int j = 1; j <= 9; j++) {
			cout << i << 'x' << j << '=' << i*j << endl;
		}
	}
}

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;
}

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

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