Data Structures using C++

#include<iostream>
using namespace std;

  class CClass1 
  { 
  public: 
     char mStringData[10];; 
     long int mDataMember1; 
     long int mDataMember2; 
     CClass1 *structpNextValue; 
     void SetValue(CString string, long int a, long int b) 
     { 
        strcpy(mStringData, string); 
        mDataMember1 = a; 
        mDataMember2 = b; 
     } 
     CClass1(void); 
     ~CClass1(void); 
  }; 
  class CClass2 
  { 
    public: 
       char mStringData[10]; 
       long int mDataMember1; 
       long int mDataMember2; 
       CClass2 *structpNextValue; 
       void SetValue(CString string, long int a, long int b) 
       { 
          strcpy(mStringData, string); 
          mDataMember1 = a; 
          mDataMember2 = b; 
       } 
       CClass2(void); 
       ~CClass2(void); 
  }; 
   CClass1 *pstrTemp; 
    lTemp = lNumOrphanRecord; 
    pstrTemp = (CClass1*)malloc(sizeof(CClass1)); 
    pstrTemp->structpNextValue = NULL; 
   CClass2 *pstrExcTemp = &mObject2[0]; 
    while(lTemp > 0) 
    { 
      pstrTemp->mDataMember1  = pstrExcTemp->mDataMember1; 
      strcpy(pstrTemp->mStringData, pstrExcTemp->mStringData); 
      pstrTemp->mDataMember2  = pstrExcTemp->mDataMember2; 
      pstrExcTemp = pstrExcTemp->structpNextValue; 
      if (mObject1->mDataMember1 == 0) 
      { 
        mObject1 = pstrTemp; 
      } 
      else 
      { 
        CClass1 *pstrPrev = NULL; 
        CClass1 *pstrCurr = mObject1; 
        long int tempSeqNum = mObject1->mDataMember1; 
        int Icount=0; 
        while ( (pstrCurr) &&(pstrCurr->mDataMember1 !=0) && 
      (pstrCurr->mDataMember1 < pstrTemp->mDataMember1) ) 
        { 
         pstrPrev = pstrCurr; 
          pstrCurr = pstrCurr->structpNextValue; 
        } 
        if ((pstrCurr) && (pstrCurr->mDataMember1 == pstrTemp->mDataMember1) ) 
        { 
          if (pstrCurr->mDataMember2 < pstrTemp->mDataMember2) 
          { 
            pstrTemp->structpNextValue = pstrCurr->structpNextValue; 
            free(pstrCurr); 
            pstrCurr = pstrTemp; 
            if (tempSeqNum == pstrTemp->mDataMember1) 
            { 
              mObject1 = pstrCurr; 
            } 
            if(pstrPrev) 
            { 
              pstrPrev->structpNextValue = pstrCurr; 
            } 
          } 
          if(!pstrTemp) 
            pstrTemp = NULL; 
          lNumOrphanRecord--; 
        } 
        else 
        { 
          if (pstrPrev) 
          { 
            pstrPrev->structpNextValue = pstrTemp; 
            pstrTemp->structpNextValue = pstrCurr; 
          } 
          else 
          { 
            pstrTemp->structpNextValue = pstrCurr; 
            mObject1 = pstrTemp; 
          } 
        } 
      } 
        pstrTemp = (CClass1*)malloc(sizeof(CClass1)); 
        pstrTemp->structpNextValue = NULL; 
        lTemp--; 
    } 
    lNumRecord += lNumOrphanRecord; 
    pstrExcTemp = &mObject2[0]; 
    pstrExcTemp = pstrExcTemp->structpNextValue; 
   
          while(mObject2->structpNextValue != NULL) 
          { 
            pstrExcTemp = mObject2->structpNextValue; 
            mObject2->structpNextValue = pstrExcTemp->structpNextValue; 
              if(!pstrExcTemp) 
                pstrExcTemp = NULL; 
          }