Conditionals: Difference between revisions
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[[file:arrows.png|right|frame|Programming basics<ref>http://www.flaticon.com/</ref>]] | [[file:arrows.png|right|frame|Programming basics<ref>http://www.flaticon.com/</ref>]] | ||
A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Conditionals depend on [[operators]] to evaluate if an expression is true or false. | A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Conditionals depend on [[operators]] to evaluate if an expression is true or false. A condition and selection are not the same thing. A condition asks a question. A selection processes the answer. | ||
The list below is an example of types of conditional questions: | The list below is an example of types of conditional questions: | ||
Revision as of 13:04, 9 July 2017
Programming basics[1]
A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Conditionals depend on operators to evaluate if an expression is true or false. A condition and selection are not the same thing. A condition asks a question. A selection processes the answer.
The list below is an example of types of conditional questions:
- Match
- Threshold
- Range
- One-of
- Not-match
- Not one of
- All of
- Some of
- Eligible
An example of a simple conditional in PHP can be found below:
<?php
# this file is used to teach the VERY BASICS of conditions in php
$secret_number = 54;
$player_guess = 54;
if ($player_guess == $secret_number) {
echo "You guessed it!";
} elseif ($player_guess >= $secret_number) {
echo "a bit high...";
} elseif ($player_guess <= $secret_number) {
echo "a bit low...";
}
?>
A video[edit]
This video references the C programming language and scratch, but the ideas about conditionals are excellent. In the case of conditionals, PHP and C share similar syntax (but not exact).
Standards[edit]
- Define the terms: variable, constant, operator, object.