#include  "stdafx.h" 
#include  "string.h" 
#include  "stdio.h" 

// The last argument should be   0 
char* MyStrCat(char* pChar,...)
{
	char** ppA = &pChar;
	char* pReturn=new char( 0 );
	
	int nTotalLength;
	char* pNewString;
	char* pCurArg;
	while (pCurArg = *ppA++)
	{
		nTotalLength = strlen(pReturn)+strlen(pCurArg)+ 1 ;
		pNewString = new char(nTotalLength);
		strcpy(pNewString,pReturn);
		delete pReturn;
		pReturn = pNewString;
		strcat(pReturn,pCurArg);
	}
	return pReturn;
}

int main(int argc, char* argv[])
{
	printf( "%s\n" ,MyStrCat( "1aaaaa" , "2bbb" , "3cccc" , 0 ) );
	return  0 ;
}

pNewString = new char(nTotalLength);

pNewString = new char[nTotalLength];