CODEWITHSUNDEEP
cmemorymemory-managementdynamic-memory-allocation
SUD pythonism
SUD pythonism

Reputation: 19

Create short int memory allocation in C

Here short int memory is allocated but in my 64 bit computer it return size 4 instead of 2 ? But How I should create short int memory allocation and how display it?

int *ptr;
ptr = (int * ) malloc(sizeof(short int));
*ptr = 7;
printf("%d\n", sizeof(*ptr)); // It returns 4 instead of 2

Upvotes: 0

Views: 124

Answers (1)

Unmitigated
Unmitigated

Reputation: 89314

You should be using a pointer to short.

short *ptr;
ptr = malloc(sizeof(short));
printf("%zu\n", sizeof(*ptr));

Note: a common idiom when allocating memory is to use *ptr as the expression for sizeof to use as that will give the correct number of bytes that should be allocated for a variable of this type.

short *ptr = malloc(sizeof(*ptr));
printf("%zu\n", sizeof(*ptr));

Upvotes: 2

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