#include <stdio.h>
#include <string.h>

void vulnerable_function(char *input) {
    char buffer[256];
    printf(input); 
    strncpy(buffer, input, sizeof(buffer) - 1);
    buffer[sizeof(buffer) - 1] = '\0';
    printf("\nInput processed: %s\n", buffer);
}

int test() {
    char malicious_input[] = "Hello World! %x %x %x %x\n"; 
    vulnerable_function(malicious_input);
    return 0;
}