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H12A-Section-1-solutions

H12A-Section-1-solutions
H12A-Section-1-solutions

Eric Roberts Handout #12A

CS106A September 29, 1999

Solutions to Section #1

Problem 1. Karel at helper hours

/*

* Procedure: MoveToNextColumn

* ---------------------------

* This procedure moves Karel from the base of one column

* to the base of the next.

*/

procedure MoveToNextColumn()

{

TurnRight();

iterate (4) {

Move();

}

TurnRight();

}

/*

* Procedure: HelpStudent

* ----------------------

* This procedure instructs Karel to fill the hole directly

* below its current position. Note that this procedure is

* identical to FillHole from the text.

*/

procedure HelpStudent()

{

TurnRight();

Move();

if (NoBeepersPresent()) {

PutBeeper();

}

TurnAround();

Move();

TurnRight();

}

Problem 2. Converting Fahrenheit to Celsius

/*

* File: tempconv.c

* ----------------

* This program converts a temperature value given in degrees * Fahrenheit into its equivalent in degrees Celsius.

*/

#include

#include "genlib.h"

#include "simpio.h"

main()

{

double fahrenheit, celsius;

printf("Program to convert Fahrenheit to Celsius.\n");

printf("Fahrenheit temperature? ");

fahrenheit = GetReal();

celsius = (5.0 / 9.0) * (fahrenheit - 32);

printf("Celsius equivalent: %g\n", celsius);

}

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