Simple Question from Stupid Person...

Hi. I have a series of question about a simple hypothetical program. It is part of a test-review sheet, and I can't figure it out for the life of me:

Here's the sim-program:

GET #
STORE N1
GET
STORE N2
SUB N1 # subtracts N1 from what's on scratch-pd
IFPOS A # if s-pad is pos, go to A
LOAD N1 # load N1 to s-pad
GOTO DONE
A LOAD N2
DONE PRINT
STOP
N1 INIT 0
N2 INIT 0

Here are the questions:
(a) If you run this and submit the numbers 1O and 3O in that order, what value will be printed?

(b) If you run this and submit 10 and 3 in that order, what value will print?

(c) How could you phrase in plain English what this program does?

(d) Sketch out a program that will read a sequence of numbers and print the value of how many numbers there were. "Read" should stop when the number 0 is read. This 0 will not be included in the count.

(e) Write the code for a program that prints the numbers 1, 2, 3, ..., and will loop infinitely.


Thanks!!!

Seems to me like you've posted the complete set of questions straight from the sheet. Why don't _you_ try answering them.

Read the second post in this thread.


[edit]Also, this isn't C related. I'll leave it here for about 30min, then I'm going to move it to GD.

OK, so I figured the rest out. However, I still can't figure out how to do the COUNT program. I could program it to ADD a list of consecutive numbers until one of them was zero or until the sum itself was zero, but I am not aware if there is a "COUNT" command or if there is some way to make one function with other basic commands. Any suggestions?

Which one's the count program? The 4th or 5th?

The fourth is the "count" program, though I am also having trouble with #5. This is what I have four COUNT:

start GET
IFZERO print
ADD COUNT
STORE COUNT
GOTO start
print LOAD COUNT
PRINT
STOP
count INIT 0 (to make it zero to start with, I guess)

And this is what I have for #5... can anyone tell me if it would work or if this it totally insane and wrong?
*Write a program that prints the numbers 1, 2, 3, ..., and does not stop, i.e., is an infinite loop.

start LOAD INTEGER
ADD 1 INTEGER
STORE INTEGER
GOTO print
print LOAD INTEGER
PRINT
GOTO start
STOP
INTEGER INIT 0

(Is that STOP necessary or redundant. And would this program work?)

>And would this program work?)

What the hell language are you trying to write it in?

> GOTO print
print LOAD INTEGER

That GOTO's redundant - there's no reason to tell anything "goto the next line".

Here's the code (in C - I still don't know what you're trying to do) for #5

Code:

---

#include <stdio.h>

int main(void)
{
  int count = 1;
  while(1)
  {
    printf("%d\n", count);
    count++;
  }
  return 0;
}

---