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Ô­ÐÍ£ºextern void *malloc(unsigned int num_bytes);
Í·Îļþ£º#include <alloc.h>
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#include <syslib.h>
#include <alloc.h>
main()
{
    char *p;
    clrscr(); // clear screen
    p=(char *)malloc(100);
    if(p)
        printf("Memory Allocated at: %x",p);
    else
        printf("Not Enough Memory!\n");
    free(p);
    return 0;
} ¢Ú callocº¯Êý
Ô­ÐÍ£ºextern void *calloc(int num_elems, int elem_size);
Í·Îļþ£º#include <alloc.h>
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#include <syslib.h>
#include <alloc.h>
main()
{
    char *p;
    clrscr(); // clear screen
    p=(char *)calloc(100,sizeof(char));
    if(p)
       printf("Memory Allocated at: %x",p);
    else
       printf("Not Enough Memory!\n");
    free(p);
    return 0;
} ¢Ûreallocº¯Êý
Ô­ÐÍ£ºextern void *realloc(void *mem_address, unsigned int newsize);
Í·Îļþ£º#include <alloc.h>
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