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 <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 );
		}
	}
	while(true);
	return 0;
}

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

int main(){
    int i, t;
    
    for(i = 1; i <= 9; i++){
        for(t = 1; t <= 9; t++){
            cout << i << "x" << t << "=" << i * t << endl;
        }
    }
    
    return 0;
    
}

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

//NAMESPACE
using namespace std;

//CONSTANT
const int64_t INF=INT64_MAX;

//FAST I/O
void init(){cin.tie(0);ios::sync_with_stdio(false);}
//----------------------------------------------------

int main(){
  init();

  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<10;i++){
        for(j=1;j<10;j++){
            cout << i <<"x"<<j<<"="<<i*j<<endl;
        }
    }
    return 0;
}

C++: #include <stdio.h>

//１０個のデータを入力し、大きい順で３つのデータを取り出すプログラム

int main(void)
{
	int i, j;		//繰り返し変数
	int h[10];		//データ格納スペース
	int n = 0;			//一時変数
	int rank[3];	//順位付けしたデータを格納

	for (i = 0; i < 10; i++){
		scanf("%d", &h[i]);
	}
	for (j = 0; j < 3; j++){
		for (i = 0; i < 10; i++){
			if (h[n] < h[i]){
				n = i;
			}
		}
		rank[j] = h[n];
		h[n] = -1;
		n = 0;
	}

	printf("%d\n", rank[0]);
	printf("%d\n", rank[1]);
	printf("%d\n", rank[2]);

	return (0);
}

C++: #include<iostream>
int main(void){
int i=1,j=1;
for(i;i<10;i++){
for(j=1;j<10;j++){
std::cout<<i<<"x"<<j<<"="<<i*j<<std::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(){
    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;
 
const int MAXN=1010;
const int MAXM=10010;
typedef struct{int v,next,rt,cost,bt,bv;}edge;
 
int N,M,eid;
int rt,w;//ä¸å®æ ¹
int p[MAXN],In[MAXN],ind[MAXN],hash[MAXN];;
edge e[MAXM];
bool vist[MAXN];
int clen;
 
inline void init(){eid=0;memset(p,-1,sizeof(p));}
 
inline void insert(int from , int to , int cost)
{
    if (from==to) return;
    e[eid].next=p[from];
    e[eid].v=to;
    e[eid].rt=from;
    e[eid].bv=to;
    e[eid].bt=from;
    e[eid].cost=cost;
    p[from]=eid++;
}
 
// å®æ ¹
// inline void dfs(int pos)
// {
//     int j;
//     for (j=p[pos];j!=-1;j=e[j].next)
//     {
//         if(!vist[e[j].v])
//         {
//             vist[e[j].v]=true;
//             dfs(e[j].v);
//         }
//     }
// }
int Cnt;
int st;
inline bool c_dfs(int pos)
{
    int x=ind[pos];
 
    if (x==-1)
    {
        return false;
    }
 
    int v=e[x].rt;
 
    if (!vist[v])
    {
        vist[v]=true;
        if(c_dfs(v))
        {
            hash[v]=Cnt;
            return true;
        }
        vist[v]=false;
    }
    else
    {
        return st==v;
    }
 
    return false;
}
 
int fit;
 
inline int Rtree()
{
    int i;
    //ä»¥ä¸ä¸ºä¸å®æ ¹
    ++w;
    rt=N;
    for (i=0;i<N;++i) insert(rt,i,w);
    ++N;
    ///////////////////
    //å®æ ¹ä¸ç¨
    //rt=0
    //memset(vist,0,sizeof(vist));    
    //vist[rt]=true;
    //dfs(rt);
    //for (i=0;i<N;++i) if(!vist[i]) {return -1;}
    ///////////////////
 
    int res=0;
    for (i=0;i<N;++i) hash[i]=i;
    bool flag=true;
 
    int bbt=rt;
    int ct;
 
    fit=INT_MAX;
 
    while(1)
    {
        ct=clen=Cnt=0;
        for (i=0;i<N;++i) In[i]=INT_MAX,ind[i]=-1;
 
        //æ¾æå°è¾¹
        for (i=0;i<eid;++i)
        {
            int ff=e[i].rt;
            int tt=e[i].v;
 
            if (ff==tt)
            {
                continue;
            }
 
            if (e[i].cost<In[tt])
            {
                In[tt]=e[i].cost;
                ind[tt]=i;    
            }
        }
 
        In[rt]=0;    
        ind[rt]=-1;
 
        for (i=0;i<N;++i)
        {
            int x=ind[i];
            if(x==-1) continue;
            if(e[x].bt==bbt)
            {
                ++ct;
                if(e[x].bv<fit) fit=e[x].bv;
            }
        }
 
        memset(vist,0,sizeof(vist));
 
        //æ¾ç¯
 
        for (i=0;i<N;++i)
        {
            if(!vist[i])
            {
                vist[i]=true;
                hash[i]=Cnt;
                st=i;
                if(c_dfs(i))
                {
                    ++clen;
                    ++Cnt;
                    continue;
                }
                vist[i]=false;
                ++Cnt;
            }
        }
 
        for (i=0;i<N;++i)
        {
            res+=In[i];
        }
 
        if (clen==0)
        {
            break;
        }
 
        //ç¼©ç¹å¹¶æ¹è¾¹
        for (i=0;i<eid;++i)
        {
            int ff,tt;
            ff=e[i].rt;
            tt=e[i].v;
            e[i].rt=hash[e[i].rt];
            e[i].v=hash[e[i].v];
 
            if (e[i].rt!=e[i].v)
            {
                e[i].cost-=In[tt];
            }
        }
 
        N=Cnt;
        rt=hash[rt];
    }
 
    if(ct!=1) return -1;
    return res-w;
}

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;
		}
	}