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 <string>
#include <cstring>
#include <fstream>
#include <random>
#include <cmath>
#include <iomanip>
#include <climits>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <map>
#include <deque>
#include <map>
#include <set>
#include <unordered_set>
#include <queue>
#include <stack>
#include <list>
#include <unordered_map>
#include <bitset>
#include <sstream>
#include <new>
#include <typeinfo>
#include <iterator>


typedef long long ll;
typedef unsigned long long ull;
constexpr ll mop = 1000000007;
constexpr ll mop2 = 998244353;

using namespace std;

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

C++: #include<stdio.h>

int main(void) {

	for (int i = 1; i <= 9; i++)
	{
		for (int t = 1; t <= 9; t++)
		{
			printf("%dx%d=%d\n", i, t, i*t);
		}
	}
	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;
}

C++: #include <cstdio>

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<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, j * i);
		}
	}
	return 0;
}

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

int main()
{
    int multiplier,multiplicand;

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

    return 0;
}

C++: #include <stdio.h>

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

C++: j;main(i){for(;9/i;i+=!(j%=9))printf("%dx%d=%d\n",i,j,++j*i);}

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<cstdio>
int main(void)
{
    for(int i=0;i<9;i++)
        for(int j=0;j<9;j++)
        {
            printf("%dx%d=%d\n",i+1,j+1,(i+1)*(j+1));
        }
    return 0;
}

C++: #include <stdio.h>


int main()
{
   int a,b,c,i,j,sum;
   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 <= 9; i++) {
    for(int j = 1; j <= 9; j++) {
      cout << i << "x" << j << "=" << i*j << "\n";
    }
  }

  return 0;
}

C++: #include <bits/stdc++.h>

using namespace std;

#define FOR(i, m, n) for(int i = m; i < n; i++)

int main() {
    FOR(i, 1, 10) FOR(j, 1, 10) {
            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 <cassert>
using namespace std;
int main(){
assert(false);
}

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 <iostream>
using namespace std;

int main()
{
  int i,j,x;
  for(i=1;i<=9;i++)
    {
      for(j=1;j<=9;j++)
	{
	  x = i*j;
	  cout << i << "x" << j << "=" << x << 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++: //#define _GLIBCXX_DEBUG
#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <string>
#include <cstring>
#include <sstream>
#include <numeric>
#include <complex>

using namespace std;
typedef long long ll;
typedef pair<int,int> PI;

#define rep(i,n) for(int i=0;i<(int)(n);++i)
#define F first
#define S second
#define mp(a,b) make_pair(a,b)
#define pb(a) push_back(a)
#define SZ(a) (int)((a).size())
#define ALL(a) a.begin(),a.end()
#define FOR(it,a) for(__typeof(a.begin())it=a.begin();it!=a.end();++it)


//低優先度


#include <list>
#include <stack>
#include <iomanip>
#include <fstream>
#include <cassert>
#define REP(i, n) rep (i, n)
#define min3(a,b,c) min((a),min((b),(c)))
#define min4(a,b,c,d) min((a),min3((b),(c),(d)))
#define FLL(a,b) memset((a),b,sizeof(a))
#define CLR(a) memset((a),0,sizeof(a))
#define EPS (1e-8)
template<class T,class U>ostream&operator<<(ostream&o,pair<T,U>&v){return o<<"("<<v.F<<","<<v.S<<")";}
template<class T>ostream&operator<<(ostream&o,vector<T>&v){o<<"{";rep(i,SZ(v))o<<(i?",":"")<<v[i];return o<<"}";}
string i2s(int a){stringstream ss;ss<<a;return ss.str();};
typedef double FP;
typedef complex<FP> pt;
typedef pt P;
typedef pair<pt,pt> line;
FP dot(P a,P b){return real(conj(a)*b);}
FP crs(P a,P b){return imag(conj(a)*b);}
P ortho(P a){return a*P(0,1);}
P ortho(line a){return ortho(a.S-a.F);}
P crspt(P a,P b,P c,P d){b-=a,d-=c;return a+b*crs(d,c-a)/crs(d,b);}
P crspt(line a,line b){return crspt(a.F,a.S,b.F,b.S);}
bool onl(P a1,P a2,P b){return abs(b-a1)+abs(b-a2)<abs(a1-a2)+EPS;}
bool onl(line a,P b){return onl(a.F,a.S,b);}
bool iscrs(line a,line b){P c=crspt(a,b);return onl(a,c)&&onl(b,c);}
void pkuassert(bool t){t=1/t;};
int dx[]={0,1,0,-1,1,1,-1,-1};
int dy[]={1,0,-1,0,-1,1,1,-1};
enum{TOP,BTM,LFT,RGT,FRT,BCK};
int dxdy2ce[]={RGT,FRT,LFT,BCK};
template<class T> T shift(T a,int b,int c,int d,int e){
 __typeof(a[0])t=a[b];a[b]=a[c];a[c]=a[d];a[d]=a[e];a[e]=t;
 return a;}
template<class T> T rgt(T a){return shift(a,TOP,LFT,BTM,RGT);}
template<class T> T lft(T a){return shift(a,TOP,RGT,BTM,LFT);}
template<class T> T frt(T a){return shift(a,TOP,BCK,BTM,FRT);}
template<class T> T bck(T a){return shift(a,TOP,FRT,BTM,BCK);}
line mkl(P a,P v){return line(a,a+v);}
FP lpdist(line a,P b){return abs(b-crspt(a,mkl(b,ortho(a))));}
FP spdist(line a,P b){
  P c(crspt(a,mkl(b,ortho(a))));
  return onl(a,c)?abs(b-c):min(abs(a.F-b),abs(a.S-b));
}
FP ssdist(line a,line b){
 return
  iscrs(a,b)?0.:
   min4(spdist(a,b.F),spdist(a,b.S),
        spdist(b,a.F),spdist(b,a.S));
}
namespace std{
  bool operator<(const P&a,const P&b){
    return mp(real(a),imag(a))<mp(real(b),imag(b));
  }
}

int main(int argc, char *argv[])
{
  int a,b;
  ofstream fout("out.txt");
  if(fout){
    rep(i,9)rep(j,9) printf("%dx%d=%d\n",i+1,j+1,(i+1)*(j+1));
    fout << a+b << endl;    
  }

  return 0;
}

C++: #include<stdio.h>
#include<string.h>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<iostream>
using namespace std;
int main() {
	int n, i, j, h = 0, cnt = 0, m, p, k = 3, l[10], S, L, s[10], a[10];
	for (i = 1; i <= 9; i++) {
		for (j = 1; j <= 9; j++) {
			int seki = i*j;
			printf("%dx%d=%d\n", i, j, seki);
		}
	}

}

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);
        }
    }
    return 0;
}

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

C++: #include<stdio.h>
int main(i){for(i=9;i<90;i++)printf("%dx%d=%d\n",i/9,i%9+1,i/9*(i%9+1));}