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memory allocation problem in 2d array

Discussion in 'MFC' started by rinuvc, Mar 12, 2008.

  1. rinuvc

    rinuvc New Member

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    --------------------------------------------------------------------------------

    hi all

    am havin a problem with memory allocation of 2d array

    can any body help me out ...


    it goes like this

    char ** a;

    in a loop for each time

    a = new char[strlen(name)+1];

    strcpy(a,name);

    a[strlen(name)+1]='\0';


    in a loop i deallocate it with

    delete[] a;

    after the loop

    delete [] a;



    can any body help me with this ????
    thanks in advance... :confused:
     
  2. asadullah.ansari

    asadullah.ansari TechCake

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    According to you i run this programm.
    No problem . Can you specify your problem problem?
    Code:
    #include<string.h>
    #include<stdio.h>
    
    int main()
    {
      char ** a;
      char *name="Go4Expert";
      int i,n=5;
      for(i=0;i<n;++i)
      {
        a[i] = new char[strlen(name)+1];
        strcpy(a[i],name);
        a[i][strlen(name)+1]='\0';
      }
      for(i=0;i<n;++i)
      {
        printf("%s",a[i]);
      }
      for(i=0;i<n;++i)
        delete[] a[i];
      delete a;
      return 0;
    }
    
     
  3. rinuvc

    rinuvc New Member

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    i have done it in vc++

    this is the code

    Code:
    char ** interfaceName; 
    
    void CIDLDETAILS :: getInterface(char Buff[],int len) //parses the internal interface from the file
    {
    	int j,k = 0,cnt = 0,count = 0,flag = 0;
    	char keyword[] = Interface;
    	int	keywordLength = strlen(keyword);
    	char interfaceNameTemp[60];
    	interfaceName = new char *[50];   // :confused: 
    	for(int i = 0; i < len; i++)
    	{	
    		
    	for( j = 0 ; j <keywordLength  && (keyword[j] == Buff[i+j]); j++)
    	{
    	}
    	if (j == keywordLength)
    	{
    	      if(Buff[i-1] == SPACE || Buff[i-1] == NEWLINE) 
     	       if(Buff[i+j] == SPACE )
    	       {
    	          while(Buff[i+j] != SPACE )
    	          {
    		i++;
    	}
    	while(IsCharAlphaNumeric( Buff[j+i+k+1] ) || Buff[j+i+k+1] == UNDERSCORE)
    	{
    	interfaceNameTemp[k] = Buff[j+i+k];
    	k++;
    	}
                    interfaceNameTemp[k] = Buff[j+i+k];
    	interfaceNameTemp[k+1] = ENDOFARRAY;
    	count = cnt;
    	flag = 0;
    	while(count != 0)                                    //Avoiding the Duplicate Interfaces
    	{
    	    if((strcmp(interfaceNameTemp,interfaceName[count-1])) == 0)
    	    {
    		flag = 1;
    		break;
                        }
    	    count--;
    	}
    	if(flag == 0)
    	{
    	   interfaceName[cnt] = new char[strlen(interfaceNameTemp)+1]; :confused: 
    	   strcpy(interfaceName[cnt],interfaceNameTemp); :confused: 
    	   interfaceName[cnt][k+1] = '\0'; :confused: 
           	   cnt++;
    	}
                    k = 0;
                  }
              }
           }
        m_InterfaceCount = cnt;
        for(int i = 0; i < cnt ; i++)
           MessageBox(CString(interfaceName[i]));
    
    for(int i = 0; i < m_InterfaceCount ; i++)
    	   delete[]interfaceName[i]; :confused: 
    	delete []interfaceName; :confused: 
    
    }


    am trying to parse a file put the internal interface of the idl file

    in to the array


    its running ok but as soon as i close the dialog box an go to the main dialog box
    its shows #2 stack around the variable m_dlg( which is a dialog object????) is corrupted
     
    Last edited by a moderator: Mar 13, 2008
  4. asadullah.ansari

    asadullah.ansari TechCake

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    I think it's not part of c++. You can put this querry in win32/MFC forum.
     
  5. asadullah.ansari

    asadullah.ansari TechCake

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    Please ensure that no duplication of any article/qwuerry should be.

    So please shabbir just close this thread.
     
  6. shabbir

    shabbir Administrator Staff Member

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    I have closed your other thread and moved the current thread to MFC/Win32 forum
     

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