C undefined reference to ` vtable for XXX ` error-CodePudding

Wrote a parsed GPS message class, but when the test has been an error
C: \ Users \ LeoYAO \ AppData \ Local \ Temp \ cc1ecCYe o: function In ` main ':
F:/Coding/Cpp/Project/receiver/test_main Cpp: 8: undefined reference to ` StrSentence: : StrSentence (STD: : __cxx11: : basic_string & lt; Char, STD: : char_traits & lt; Char> , STD: : allocator Const&) '
C: \ Users \ LeoYAO \ AppData \ Local \ Temp \ cc1ecCYe o: test_main. CPP. : (rdata $. Refptr. _ZTV11StrSentence [. Refptr. _ZTV11StrSentence] + 0 x0) : undefined reference to ` vtable for StrSentence '
Collect2. Exe: error: ld returned 1 exit status
The source code

 # # ifndef MSGSENTENCEBASE_H 
# define MSGSENTENCEBASE_H 
#include  

Class MsgSentenceBase//abstract base class 
{
Public: 
Virtual ~ MsgSentenceBase () {}; 
Virtual STD: : string content (const)=0; 
Virtual int length (const)=0; 
Virtual bool SumChk (const)=0; 
}; 

# endif

 # # ifndef STRSENTENCE_H 
# define STRSENTENCE_H 
# include "MsgSentenceBase. H" 
#include  
#include  
#include  
#include  
#include  

The class StrSentence: public MsgSentenceBase 
{
Public: 
StrSentence (const STD: : string&); 

STD: : string content () const override {return sentence; } 
Int length () const override {return. What size (); } 
Bool SumChk () const override; 
Private: 
STD: : string sentence; 
STD: : from & lt; std::vector Part_vec; 
}; 

# endif

 # include "StrSentence. H" 
Using STD: : vector; 
Using STD: : string; 
Using STD: : from; 
Using STD: : make_shared; 
Using STD: : stoi; 
Using STD: : bitset; 
Using STD: : regex; 
Using STD: : sregex_token_iterator; 

StrSentence: : StrSentence (const string& S) 
: sentence (s), part_vec (new vector) 
{
The regex reg (" [$, *] "); 
Sregex_token_iterator beg (sentence. The begin (), sentence. The end (), reg, 1);//1, the regular type that matches the item as a delimiter 
Auto end=STD: : sregex_token_iterator ();//the default constructor end - of - the sequence iterator 
Beg++; 
//omitted emptyfor (; Beg!=end; + + beg) 
{
Part_vec - & gt; Push_back (beg - & gt; STR ()); 
} 
} 

Bool StrSentence: : SumChk (const) 
{
Auto check_sum=stoul (part_vec - & gt; The back (), nullptr, 16); 
Auto str_to_chk=sentence. Substr (1, what size () - (4); 

Auto beg_str=str_to_chk. Cbegin (); 
Auto end_str=str_to_chk. Cend (); 
Bitset<8 & gt; The sum (0 x00); 
for (; Beg_str!=end_str; Beg_str + +) 
{
The sum ^=bitset<8 & gt; (* beg_str); 
} 
Return the sum. To_ulong ()==check_sum; 
}

 # include "StrSentence. H" 

using namespace std; 
Int main () 
{
Hold the string STC="$XXXXXXXXXX"; 
Hold StrSentence s (STC); 
system("pause"); 
}

CodePudding user response:

I was using a dev
c + +Add compiler options: - STD=gnu++ 11

 # include & lt; Iostream> 

/* run this program using the console pauser or add your own getch, system (" pause ") or the input loop */
#include  
#include  
#include  
#include  
#include  
#include  
using namespace std; 

Class MsgSentenceBase//abstract base class 
{
Public: 
Virtual ~ MsgSentenceBase () {}; 
Virtual STD: : string content (const)=0; 
Virtual int length (const)=0; 
Virtual bool SumChk (const)=0; 
}; 


The class StrSentence: public MsgSentenceBase 
{
Public: 
StrSentence (const STD: : string&); 

STD: : string content () const override {return sentence; } 
Int length () const override {return. What size (); } 
Bool SumChk () const override; 
Private: 
STD: : string sentence; 
STD: : from & lt; std::vector Part_vec; 
}; 


StrSentence: : StrSentence (const string& S) 
: sentence (s), part_vec (new vector) 
{
The regex reg (" [$, *] "); 
Sregex_token_iterator beg (sentence. The begin (), sentence. The end (), reg, 1);//1, the regular type that matches the item as a delimiter 
Auto end=STD: : sregex_token_iterator ();//the default constructor end - of - the sequence iterator 
Beg++; 
//omitted emptyfor (; Beg!=end; + + beg) 
{
Part_vec - & gt; Push_back (beg - & gt; STR ()); 
} 
} 

Bool StrSentence: : SumChk (const) 
{
Auto check_sum=stoul (part_vec - & gt; The back (), nullptr, 16); 
Auto str_to_chk=sentence. Substr (1, what size () - (4); 

Auto beg_str=str_to_chk. Cbegin (); 
Auto end_str=str_to_chk. Cend (); 
Bitset<8 & gt; The sum (0 x00); 
for (; Beg_str!=end_str; Beg_str + +) 
{
The sum ^=bitset<8 & gt; (* beg_str); 
} 
Return the sum. To_ulong ()==check_sum; 
} 
Int main (int arg c, char * * argv) {
Hold the string STC="$XXXXXXXXXX"; 
Hold StrSentence s (STC); 
system("pause"); 
return 0; 
}

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