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 <vector>
#include <string>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>	// require sort next_permutation count __gcd reverse etc.
#include <cstdlib>	// require abs exit atof atoi 
#include <cstdio>		// require scanf printf
#include <functional>
#include <numeric>	// require accumulate
#include <cmath>		// require fabs
#include <climits>
#include <limits>
#include <cfloat>
#include <iomanip>	// require setw
#include <sstream>	// require stringstream 
#include <cstring>	// require memset
#include <cctype>		// require tolower, toupper
#include <fstream>	// require freopen
#include <ctime>		// require srand
#define rep(i,n) for(int i=0;i<(n);i++)
#define ALL(A) A.begin(), A.end()

using namespace std;

typedef long long ll;
typedef pair<int, int> P;

int main()
{
	rep (i, 9 ) rep (j, 9 ){
		cout << i+1 << 'x' << j+1 << '=' << (i+1)*(j+1) << endl;
	} // end rep
		
	return 0;
}

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

C++: #include <iostream>
#include <sstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <climits>
#include <cfloat>
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;
}

C++: #include <iostream>

using namespace std;

int main()
{
    int x= 0;
    int y= 0;

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

    return 0;
}

C++: #include<stdio.h>

int main(){
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 <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<stdio.h>

int main(){
int i,n;
for(i=1;1<=9;i++){
for(n=1;n<=9;n++){
printf("%dx%d=%d\n",i,n,i*n);
}
]
    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 <bits/stdc++.h>
#define LL long long
//#define rep(i,n) for (int i=0;i<(n);i++)
#define rep(i,x,n) for (int i=x;i<(n);i++)
using namespace std;
int main(){
	
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	rep(i,1,9){
		rep(j,1,9){
			cout << i << "x" << j << "=" << i*j << endl;
		}
	}
	return 0;
}

C++: #include<stdio.h>
#include<string.h>
#include<iostream>
#include<algorithm>
#include<queue>
#define ll __int64
#define mmax 1010
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++: test

C++: <?php 

for($i = 1; $i < 10; $i++){
	for($j = 1; $j < 10; $j++){
		$sum = $i*$j;
		print "{$i}x{$j}={$sum}\n";
	}
}

?>

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 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 };

#ifdef _DEBUG
#define dump(x) cout << #x << " = " << (x) << "\n"
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n"
#else
#define dump(x)
#define debug(x)
#endif


int main() {
#ifdef _DEBUG
	printf( "Debug Mode\n" );
#endif
	for ( int i = 1; i < 10; i++ ) {
		for ( int j = 1; j < 10; j++ ) {
			dump( i );
			dump( j );
			printf( "%dx%d=%d\n", i, j, i * j );
		}
	}
	return 0;
}

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

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

C++: #include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include<iomanip>
#include <cmath>
#include <queue>
#include <stack>
#include <map>
#include <cstdio>

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 x,y;
  for(x=1;x<10;x++){
      for(y=1;y<10;y++){
          cout << x << "x" << y << "=" << x*y << endl;
      }
  }
}

C++: #include <iostream>
using namespace std;
#define N 9

int main(){
    for(int i=1; i<=N; i++){
        for(int j=1; j<=N; j++){
            cout << i << "x" << j << "=" << (i*j) << "\n";
        }
    }
    return 0;
}