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The dynamic allocation of arrays works very well for allocating strings in the heap. The

advantage of heap allocating a string is that the heap block can be just big enough to store

the actual number of characters in the string. The common local variable technique such

 as  char string[1000]; allocates way too much space most of the time, wasting the unused bytes, and yet fails if the string ever gets bigger than the variable's fixed size.

#include <string.h>

/*

Takes a c string as input, and makes a copy of that string

in the heap. The caller takes over ownership of the new string

and is responsible for freeing it.

*/

char* MakeStringInHeap(const char* source) {

char* newString;

newString = (char*) malloc(strlen(source) + 1); // +1 for the '\0'

assert(newString != NULL);

strcpy(newString, source);

return(newString);

}

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