poiner in c
int* pc, c, d;
c = 5;
d = -15;
pc = &c; printf("%d", *pc); // Output: 5
pc = &d; printf("%d", *pc); // Ouptut: -15poiner in c
int* pc, c, d;
c = 5;
d = -15;
pc = &c; printf("%d", *pc); // Output: 5
pc = &d; printf("%d", *pc); // Ouptut: -15pointer c
#include <stdio.h>
#include <stdlib.h>
int main()
{
int *ptr, i , n1, n2;
printf("Enter size: ");
scanf("%d", &n1);
ptr = (int*) malloc(n1 * sizeof(int));
printf("Addresses of previously allocated memory: ");
for(i = 0; i < n1; ++i)
printf("%u\n",ptr + i);
printf("\nEnter the new size: ");
scanf("%d", &n2);
// rellocating the memory
ptr = realloc(ptr, n2 * sizeof(int));
printf("Addresses of newly allocated memory: ");
for(i = 0; i < n2; ++i)
printf("%u\n", ptr + i);
free(ptr);
return 0;
}Copyright © 2021 Codeinu
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