Multimap之擦除不起作用

Question

下面的代碼不能與輸入工作：

2 
7 
add Elly 0888424242 
add Elly 0883666666 
queryname Elly 
querynum 0883266642 
querynum 0888424242 
delnum 0883666666 
queryname Elly 
3 
add Kriss 42 
add Elly 42 
querynum 42 

爲什麼我擦除不起作用？

#include<stdio.h> 
#include<iostream> 
#include<map> 
#include <string> 

using namespace std; 

void PrintMapName(multimap<string, string> pN, string s) 
{ 
    pair<multimap<string,string>::iterator, multimap<string,string>::iterator> ii; 
    multimap<string, string>::iterator it; 
    ii = pN.equal_range(s); 
    multimap<string, int> tmp; 
    for(it = ii.first; it != ii.second; ++it) 
    {  
     tmp.insert(pair<string,int>(it->second,1)); 
    } 
    multimap<string, int>::iterator i; 
    bool flag = false; 
    for(i = tmp.begin(); i != tmp.end(); i++) 
    { 
     if(flag) 
     { 
      cout<<" "; 
     } 
     cout<<i->first; 
     if(flag) 
     { 
      cout<<" "; 
     } 
     flag = true; 
    } 
    cout<<endl; 
} 

void PrintMapNumber(multimap<string, string> pN, string s) 
{ 
    multimap<string, string>::iterator it; 
    multimap<string, int> tmp; 
    for(it = pN.begin(); it != pN.end(); it++) 
    { 
     if(it->second == s) 
     { 
      tmp.insert(pair<string,int>(it->first,1)); 
     } 
    } 
    multimap<string, int>::iterator i; 
    bool flag = false; 
    for(i = tmp.begin(); i != tmp.end(); i++) 
    { 
     if(flag) 
     { 
      cout<<" "; 
     } 
     cout<<i->first; 
     if(flag) 
     { 
      cout<<" "; 
     } 
     flag = true; 
    } 
    cout<<endl; 
} 

void PrintFull(multimap<string, string> pN) 
{ 
    multimap<string, string>::iterator it; 
    for(it = pN.begin(); it != pN.end(); it++) 
    { 
     cout<<"Key = "<<it->first<<" Value = "<<it->second<<endl; 
    } 
} 

int main() 
{ 
    multimap<string, string> phoneNums; 
    int N; 
    cin>>N; 
    int tests; 
    string tmp, tmp1,tmp2; 
    while(N > 0) 
    { 
     cin>>tests;  
     while(tests > 0) 
     {   
      cin>>tmp; 
      if(tmp == "add") 
      { 
       cin>>tmp1>>tmp2; 
       phoneNums.insert(pair<string,string>(tmp1,tmp2)); 
      } 
      else 
      { 
       if(tmp == "delnum") 
       { /////////////////////////////////////////HEREEEEEEE    
        multimap<string, string>::iterator it; 
        multimap<string, string>::iterator tmpr; 
        for(it = phoneNums.begin(); it != phoneNums.end();) 
        { 
         tmpr = it; 
         if(it->second == tmp1) 
         {       
          ++tmpr;       
          if(tmpr == phoneNums.end()) 
          {        
           phoneNums.erase(it,tmpr); 
           break; 
          } 
          else 
          {       
          phoneNums.erase(it,tmpr); 
          } 
         }      
        } 
       } 
       else 
       { 
        if(tmp == "delname") 
        { 
         cin>>tmp1; 
         phoneNums.erase(tmp1); 
        } 
        else 
        { 
         if(tmp =="queryname") 
         { 
          cin>>tmp1; 
          PrintMapName(phoneNums, tmp1); 
         } 
         else//querynum 
         { 
          cin>>tmp1; 
          PrintMapNumber(phoneNums, tmp1); 
         } 
        } 
       } 
      } 
      tests--; 
     } 
     N--;   
    } 
    return 0; 
} 

Answer 1

你永遠不會將迭代器移動到你的循環中。