z/* A dynamically-allocated 1-D array */
#include <stdio.h>

int 
main (void)
{

	double* array; /* declare a pointer only */
	int i, size;

	/* ask user for size of array */
	printf ("How large do you want your array? ");
	scanf ("%d", &size);

	/* allocate the array in the heap */
	array = (double *) calloc (size, sizeof(double));

	/* printing the array for verification
	surprise! a dynamic array is 
	automatically initialized with zeros! */
	for (i = 0; i < size; ++i)
		printf ("%6.2lf", array[i]);

	/* freeing the memory allocation */
	free (array);

	return (0);
}
 

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preprocessor directives | variable declarations
main function | helper functions | user-defined structures
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How large do you want your array? 7
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