#include <stdio.h> char *fgets(char *s, int size, FILE *f){	char *p = s;	char *ep = s + size; 	if (size < 1)		return NULL; 	while (p < ep-1) {		int c = fgetc(f);		if (c == EOF || c == '\n')			break;		*p++ = c;	}	*p = 0;	return s;}