Project 2

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

// YAHIR LOZOYA                                                                 

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

  if ( argc != 2 ) {
    printf ( "You must enter a single argument on the command line\n" );
    return 1;  // Error code for operating system                               
  }

  char *theData = argv[1];

  unsigned int hashCode = 0;

  /* PUT YOUR CODE BETWEEN THIS COMMENT  */
  /* AND THE CLOSING COMMENT BELOW */


  // loop over each char in the given input string and                          
  // update the value of the hash code based on this char                       
  int i;
  for ( i = 0; i < strlen(theData); i++ ) {

    char nextChar = theData[i];
    unsigned int mask = 0xF0000000;
    int currentCharVal = nextChar;
    hashCode += currentCharVal;

    if(i != strlen(theData) - 1){
      unsigned int shiftedBits = mask & hashCode;
      hashCode = hashCode << 4;
      shiftedBits = shiftedBits >> 10;
      hashCode = shiftedBits ^ hashCode;
    }

  }

  /* CLOSING COMMENT   */

  printf ( "The hash of %s = %u\n", argv[1], hashCode );

  return 0;   // success code returned to Operating System                      
}