no matching function for call to `std::basic_string<char, std::char_traits<char>, std

[Avimun]

I am working on a c++ project using DEV C++.Following is the implementation file of a header CrStr.h

#include "CrStr.h"
#include <string>
 
using namespace std;
 
 
 
int Crlen(CrString str)
{ 
    return strlen(str);
}
 
string PrePadder(const char*,int spaces)
{
    //      
}
 
string CrPreCat(const string PreStr,string PostStr)
{
 
      const string prStr = PreStr;
      PostStr.insert(pstStr.begin(),prStr); //  I am getting the error in this line.
 
      return PostStr;
 
}
 
string CrConCat(char* PreStr,CrString PostStr)
{
         //char*(PreStr);
         return strcat(PreStr,PostStr);
}

I can't figure out the root cause of this issue.It will be greatly helpful if someone show me the way out of here.

Thanks in advance

[weaknessforcats]

This code:

return strcat(PreStr,PostStr);

looks fishy because PosStr is a string object and strcat needs a char* argument.

Should it not be:

return strcat(PreStr,PostStr_ctr());

?
I am not understanding why the mixing of C stirng functions (strlen, strcat) with C++ string objects.

This code:

string CrPreCat(const string PreStr,string PostStr)
  {
 
        const string prStr = PreStr;
        PostStr.insert(pstStr.begin(),prStr); //  I am getting the error in this line.
 
        return PostStr;
 
  }

There is no string pstStr defined.

[Banfa]

If you are going to post compiler output then post the complete compiler output please.