Dangerous function gets() in C89, c99's <stdio.h>

gets()

#include <stdio.h>

int main(void) {
	char a[] = "ABCD";
	char b[] = "BCDE";
	char c[] = "CDEF";
	
	puts(a);
	puts(b);
	puts(c);
	
	puts("Enter some characters");
	
	gets(b);
	
	puts(a);
	puts(b);
	puts(c);
	
	return 0;
}