*
* vuln.c
*/ 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char **argv){
    char buf[256];

    if(argc < 2){
        printf("Usage : ./%s <arg>\n", argv[0]);
        exit(0);
    }

    strncpy(buf, argv[1], 256);
    buf[255] = '\0';

    printf(buf);
    printf("\n");

    return 0;
}