n2.c

/* n2.c                                                      *
 * specially crafted to feed your brain by gera@core-sdi.com */

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

#define MAX_SIZE 80

unsigned int atoul(char *str) {
	unsigned int answer=0;
	for (;*str && isdigit(*str);
		answer *= 10, answer += *str++-'0');
	return answer;
}

int main(int argv, char **argc) {
	char *pbuf,buf[MAX_SIZE];
	int count = atoul(argc[1]);
	
	if (count >= MAX_SIZE) count = MAX_SIZE-1;

	pbuf=buf;
	while (count--) *pbuf++=getchar();
	*pbuf=0;
}