C / C++ Code Portfolio

else if (pOld == NULL)
{
return(newAllocatedPointer);
}
//otherwise, copy data from the pOld into the newly allocated memory
else
{
unsigned char *newAllocatedPointerStart = newAllocatedPointer, *pOldChar = pOld;
if (newSize > oldSize)
{
for (*newAllocatedPointer = *pOldChar;
(size_t)(newAllocatedPointer - newAllocatedPointerStart) < oldSize;)
{
*newAllocatedPointer++ = *pOldChar++;
}
}
else
{
for (*newAllocatedPointer = *pOldChar;
(size_t)(newAllocatedPointer - newAllocatedPointerStart) < newSize;)
{
*newAllocatedPointer++ = *pOldChar++;
}
}
free(pOld);
// return the location of the newly allocated memory
return(newAllocatedPointerStart);
}
}
}
Function Pointers
// This file contains the following functions:
// GetPrintfPointer() returns a pointer to the C library function printf()
// GetPutsPointer() returns a pointer to the C library function puts()

#include

int (*GetPrintfPointer(void))(const char *format, ...)
{
// initialize a pointer to function returning int and set to function printf()
int (*ptrToPrintf)(const char *format, ...) = printf;
return(ptrToPrintf);
}

int (*GetPutsPointer(void))(const char *str)
{
// initialize a pointer to function returning int and set to function puts()
int (*ptrToPuts)(const char *str) = puts;
return(ptrToPuts);
}
// This file contains the following three functions:
// Compare() - uses C library function strcmp() to compare two strings from a ragged string array
// SortStudents() - uses qsort() to sort an array of strings using Compare()
// DisplayClassStatus() - uses bsearch() to find attendees who weren't registered, and registered students
// who did not attend, and prints that list.

#include

#include
#include