teaching machines

CS 330 Lecture 11 – Slightly Above the Machine with C

February 14, 2014 by Chris Johnson. Filed under cs330, lectures, spring 2014.

Agenda

• what ?s
• what does assembly not do?
• things that languages provide:
  • binding names to data
  • type systems
  • scope
  • abstraction
• compilers and interpreters
• some C exercises
  • atoi
  • makepath
  • blackjack scoring

TODO

• Read chapter 1 through 1.5 in Programming Language Pragmatics. Bonus 1/4 sheet.
• Start Savage, homework 1. Later-week submission deadline is February 28.

Code

atoi.c

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

int main(int argc, char **argv) {
  const char s[] = "124213"; 

  int s_as_int = 0;

  int magnitude = 1;
  while () {
    s_as_int += (s[i] - '0') * magnitude;
    magnitude *= 10;
  }

  /* '6' - '0' */

  return 0;
}

Haiku