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C Program to calculate the size of the structure to subtract the pointers

YasminRadwan26
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2022-06-22
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C Program to calculate the size of the structure to subtract the pointers

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YasminRadwan26
2022-06-22
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#include <stdio.h>
#include <stdlib.h>
typedef struct
{
    int Age;
    float Weight;
} sInfo;
int main()
{
    //create an array of structure;
    sInfo JhonFamilyInfo[2];
    //Create pointer to the structure
    sInfo *psInfo  = NULL;
    int iSizeofStructure = 0;
    //Assign the address of array to the pointer
    psInfo = JhonFamilyInfo;
    // Subtract the pointer
    iSizeofStructure = (char*)(psInfo + 1) - (char*)(psInfo);
    printf("Size of structure  =  %d\n\n",iSizeofStructure);
    
    return 0;
}

Output:

Size of structure =  8

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Pointers and dynamic allocation memory in C
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