Go: /*
http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2006&lang=jp
Keitai Message
*/

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

// 標準入力を取得するScannerのインスタンスを作成
var scanner = bufio.NewScanner(os.Stdin)

// 標準入力で各行を読み込みstringとして返す
func readLine() string {
	if scanner.Scan() {
		return scanner.Text()
	}
	return ""
}

func main() {
	// 1: . , ! ? (スペース)
	// 2: a b c
	// 3: d e f
	// 4: g h i
	// 5: j k l
	// 6: m n o
	// 7: p q r s
	// 8: t u v
	// 9: w x y z
	// 0: 確定ボタン

	// 改行から空白区切りに変更
	scanner.Split(bufio.ScanWords)
	line, _ := strconv.Atoi(readLine()) // 5行標準入力が続く

	table := []string{
		"",      // 0 index調整ためダミーデータ
		".,!? ", // 1
		"abc",   // 2
		"def",   // 3
		"ghi",   // 4
		"jkl",   // 5
		"mno",   // 6
		"pqrs",  // 7
		"tuv",   // 8
		"wxyz"}  // 9

	// 5行分の標準入力を格納するsliceを作成する
	messages := make([]string, 0, line)

	// sliceに標準入力の内容を格納する
	for i := 0; i < line; i++ {
		messages = append(messages, readLine()) // messages=[20 220 222220 44033055505550666011011111090666077705550301110 000555555550000330000444000080000200004440000]
	}

	// 各行毎に解析する
	for _, message := range messages { // message=000555555550000330000444000080000200004440000
		// 0で分割する
		messageSlice := strings.Split(message, "0") // messageSlice=[   55555555    33    444    8    2    444    ]
		for _, word := range messageSlice {
			if word == "" {
				// NOP.
				// 0をセパレーターにしているので空文字がsliceに格納されてい箇所がある
				// 何もしない
			} else { // word=55555555
				// 一文字取り出しコード値をASCII文字に変換する
				ascii := string((word[0])) // word[0]=5

				// ASCII文字からintへ変換する(tableのindexになる)
				number, _ := strconv.Atoi(ascii)

				// 入力回数をカウントする
				count := len(word) // 5

				// 同じ数字を続けて入力すると変化する文字はループすることを考慮する
				for count > len(table[number]) { // 5 > 3
					count -= len(table[number]) // 2
				}

				// キー配列
				keys := table[number]                   //jkl
				fmt.Printf("%s", string(keys[count-1])) //k
			}
		}
		fmt.Println() // 改行
	}
}

C++: #include <iostream>
using namespace std;
int main(){
	const string TABLE[] = {".,!? ","abc","def","ghi","jkl","mno","pqrs","tuv","wxyz"};
	int n;
	cin >> n;
	for(int i=0;i<n;++i){
		string s;
		string ans;
		int k=0,l=-1;
		bool in = false;
		cin >> s;
		for(int j=0;j<s.size();++j){
			if(s[j]=='0'){
				if(in){
					ans+=TABLE[k][l];
				}
				in = false;
				k=0;
				l=-1;
			}else{
				in = true;
				l++;
				k=s[j]-'1';
				l%=TABLE[k].size();
			}
		}
		cout << ans << "\n";
	}
	return 0;
}

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

string push[10]={
"",
".,!? ",
"abc",
"def",
"ghi",
"jkl",
"mno",
"pqrs",
"tuv",
"wxyz"
};

string solve(string in){
  string res="";
  int c=0;
  int n_in=0;
  for(int i=0;i<in.size();i++){
    int t_in=in[i]-'0';
    if(t_in==0){
      if(n_in!=0){
        res+=push[n_in][(c%push[n_in].size())];
      }
      n_in=0;
      c=0;
    }else{
      if(t_in==n_in){
        c++;
      }else{
        c=0;
	n_in=t_in;
      }
    }
  }
  return res;
}



int main(){
  string in;
  int n;
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>in;
    string ans=solve(in);
    if(ans.size()!=0){
      cout<<ans<<endl;
    }
  }
}

C++: #include<stdio.h>
#include<string.h>
int main()
{
	int n,a[]={0,5,3,3,3,3,3,4,3,4};
	char*p,*q,s[1028],*t[]={"",".,!? ","abc","def","ghi","jkl","mno","pqrs","tuv","wxyz"};
	scanf("%d",&n);
	while(n--)
	{
		memset(s,0,1028);
		scanf("%s",s);
		for(p=s;*p;)
		{
			q=strpbrk(p,"0\0");
			if(*p-'0')putchar(t[*p-'0'][(q-p-1)%a[*p-'0']]);
			p=q+1;
		}
		puts("");
	}
	return 0;
}

C++: #include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
#define rep1(i,n) for(int i=1;i<(n);i++)
#define all(v) (v).begin(),(v).end()
#define pb(a) push_back(a)
using namespace std;
typedef long long LL;

int main(){
    vector<string> k = {
        "",
        ".,!? ",
        "abc",
        "def",
        "ghi",
        "jkl",
        "mno",
        "pqrs",
        "tuv",
        "wxyz"
    };
    int n;
    cin >> n;
    rep(i,n){
        string s;
        cin >> s;
        string ans = "";
        int ct = 0, now = 0;
        rep(j, s.size()){
            int x = s[j]-'0';
            if(x == 0){
                if(now == 0) continue;
                ans += k[now][ct%k[now].size()];
                now = 0;
            }else{
                if(now == x){
                    ct++;
                }else{
                    now = x;
                    ct = 0;
                }
            }
        }
        cout << ans << endl;
    }
            
}

C++: #include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){   
  char m[9][5]={{'.',',','!','?',' '},
		{'a','b','c'},
		{'d','e','f'},
		{'g','h','i'},
		{'j','k','l'},
		{'m','n','o'},
		{'p','q','r','s'},
		{'t','u','v'},
		{'w','x','y','z'}};
  int a,count=0,c[100],d;
  char b[100][1024];
  cin>>a;
  for(int i=0;i<a;i++){
    scanf("%s",b[i]);
    c[i]=strlen(b[i]);
    for(int j=0;j<c[i];j++){

      if(b[i][j]!='0')count++;
      else{
	if(b[i][j-1]!=0){
	  d=(int)(b[i][j-1])-48;
	  if(d==1)
	    if(count%5==0)
	      cout<<m[d-1][4];
	    else 
	      cout<<m[d-1][count%5-1];
	  
	  else if(d==7 || d==9)
	    if(count%4==0)
	      cout<<m[d-1][3];
	    else
	      cout<<m[d-1][count%4-1];
	  
	  else
	    if(count%3==0)
	      cout<<m[d-1][2];
	    else
	      cout<<m[d-1][count%3-1];
	  count=0;
	}
      }
    }
    cout<<endl;
  }
  return 0;
}

C++: #include<iostream>
#include<string>
#include<cstdio>
#include<algorithm>
#include<stack>
#include<queue>
#include<vector>
#include<cmath>
#include<cstring>
#include<utility>
#include<set>
#include<stack>
#include<complex>
#define vi vector<int>
#define vvi vector<vector<int> >
#define ll long long int
#define vl vector<ll>
#define vvl vector<vector<ll>>
#define vb vector<bool>
#define vc vector<char>
#define vs vector<string>
#define ld long double
#define INF 1e9
#define EPS 0.0000000001
#define rep(i,n) for(int i=0;i<n;i++)
#define CC puts("-------ok--------");
#define all(in) in.begin(), in.end()
#define bv vector<bool>
using namespace std;
typedef pair<int, int>PA;
using namespace std;
#define MAX  999999
int main(){
    char ans[][10] = {
        {},
        {'.',',','!','?',' '},
        {'a','b','c'},
        {'d','e','f'},
        {'g','h','i'},
        {'j','k','l'},
        {'m','n','o'},
        {'p','q','r','s'},
        {'t','u','v'},
        {'w','x','y','z'}
    };
    int n; cin >> n;
    rep(i,n){
        string s(100000,0);
        cin >> s;
        int temp = 0;
        int counter =-1 ;
        for(int k = 0;k<s.size();k++){
            int now = int(s[k]-48);
            if(k == 0){temp = now;counter++;}
            else if(now != 0){
                temp = now;counter++;}
            if(now == 0){
                if(temp  == 9 || temp == 7)
                    counter%=4;
                else if(temp != 1&& temp != 7 && temp!= 9)
                    counter%=3;
                else if(temp == 1)
                    counter %=5;
                cout << ans[temp][counter];
                temp = 0;counter =-1;;
            }
        }
        cout << endl;
    }
}

C++: #include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){   
  char m[9][5]={{'.',',','!','?',' '},
		{'a','b','c'},
		{'d','e','f'},
		{'g','h','i'},
		{'j','k','l'},
		{'m','n','o'},
		{'p','q','r','s'},
		{'t','u','v'},
		{'w','x','y','z'}};
  int a,count=0,c[100],d;
  char b[100][1024];
  cin>>a;
  for(int i=0;i<a;i++){
    scanf("%s",b[i]);
    c[i]=strlen(b[i]);
    for(int j=0;j<c[i];j++){
      if(b[i][j]!='0')count++;
      else
	if(b[i][j-1]!=0){
	  d=(int)(b[i][j-1])-48;

	  if(d==1)
	    if(count%5!=0)
	      cout<<m[d-1][count%5-1];
	    else cout<<m[d-1][3];

	  else if(d==7 || d==9)
	    if(count%4!=0)
	      cout<<m[d-1][count%4-1];
	    else cout<<m[d-1][3];

	  else
	    if(count%3!=0)
	      cout<<m[d-1][count%3-1];
	    else cout<<m[d-1][2];
	  
	  count=0;
	}
    }
    cout<<endl;
  }
  return 0;
}