key

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

int main()
{


char keyinput[127];
int defaultkey;
int bit;
int k;


printf("Enter Your Key. Number between 1 & 127.\n");
fgets(keyinput, 127, stdin);
int usekey = atoi(keyinput);
printf("%d\n", usekey);

if(usekey >= 1 && usekey < 127)
    {
    printf("The Key You Are Using Is %d\n", usekey);
    }
    else if (usekey > 127)
    {
    usekey = 101;
    printf("Number Entered For Key Is To Big. Using Defaultkey %d\n", usekey);
    }
    else
    {
    usekey = 101;
    printf("No Key Was Entered. Using Default Key %d\n", usekey);
    }
   //now turn this number into binary

   for (bit = 7; bit >= 0; bit--)
  {
    k = usekey >> bit;

    if (k & 1)
      printf("1");
    else
      printf("0");
  }

  printf("\n");

  return 0;
}