Question: Consider the following 3 code fragments 1) int ptr = malloc (sizeof(int)3); ptr [O] -O; ptr [1] -0: ptr [2] -0; 2) int *ptr calloc

Consider the following 3 code fragments 1) int *ptr = malloc

Consider the following 3 code fragments 1) int *ptr = malloc (sizeof(int)*3); ptr [O] -O; ptr [1] -0: ptr [2] -0; 2) int *ptr calloc ( 3, if (ptrNULL) sizeof (int)); printf ("Unable to allocate memory.In") exit (1) 3) int ptr-calloc (1, sizeof (int)) if (pt:NULL) printf("Unable to allocate memory. ") exit (1) ptr-realloc (ptr, 3 sizeof (int)): if (ptrNULL) printf("Unable to allocate memory. ") exit (1) Dynamic allocation of an integer array of size 3 with elements initialized to O is safely done in code fragment(s)

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Question: Consider the following 3 code fragments 1) int *ptr = malloc (sizeof(int)*3); ptr [O] -O; ptr [1] -0: ptr [2] -0; 2) int *ptr calloc

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Question: Consider the following 3 code fragments 1) int ptr = malloc (sizeof(int)3); ptr [O] -O; ptr [1] -0: ptr [2] -0; 2) int *ptr calloc