brainfuck interpreter

brainfuck.c

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
	char *p = malloc(1024);
	int l[10], j = 0, i = 0;

	while (argv[1][i]) { 
		switch (argv[1][i++]) {
			case '>':
				++p;
				break;
			case '<':
				--p;
				break;
			case '+':
				++*p;
				break;
			case '-':
				--*p;
				break;
			case '.':
				putchar(*p);
				break;
			case ',':
				*p = getchar();
				break;
			case '[':
				l[j++] = i - 1;
				break;
			case ']':
				j--;
				if (*p) {
					i = l[j];
				}
		}
	}
	
	return 0;
}