pwn1.c

// gcc pwn1.c
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <stdlib.h>

#define maxlen 20

int main () {
	srand(time(0));
	int i;
	char password[maxlen];
	char inp[1000];
	
	for (i=0; i<maxlen; ++i)
		password[i] = (char)(( rand() % 93 ) + 33);
	puts("password:");
	
	scanf("%s", inp);
	if ( !strncmp(inp, password, strlen(inp)) ) 
		puts("You win!");
	return 0;
}