Thread: Navigating a character string array from pointers

This program loads 6 words into the array "keywords," then segfaults for some reason. Why does it do this?

Code:

#include<stdlib.h>

int main()
{
	char** keywords = (char**) calloc(20, sizeof(char));
	int i = 0;
	for (i = 0; i < 20; i++)
		keywords[i] = (char*) calloc(80, sizeof(char));
	char string[] =
	{ "Holy cow omg hey haha wow oh jeeze louise lolz." };
	char* p = NULL;
	char* c = string;
	int n = 0;

	p = *(keywords + 0);
	while (*c)
	{

		while (!isspace(*c) && *c)
		{
			*p++ = *c++;
		}
		*p = '\0';
		if (!*c)
			break;
		c++;
		n++;
		p = *(keywords + n);
		printf("%d\r\n", n);
	}

	for (n = 0; n < 10; n++)
		printf("%s\r\n", keywords[n]);

	free(keywords);
	return 0;
}