🚀 Programming Example
Simple Calculator using PHP
Simple Calculator using PHP
<?PHP
class Calculator {
public function add($number1, $number2){
if(is_numeric($number1) && is_numeric($number2)){
return $number1+$number2;
}else{
echo "values should be numeric.";
}
}
public function subtract($number1, $number2){
if(is_numeric($number1) && is_numeric($number2)){
return $number1-$number2;
}else{
echo "values should be numeric.";
}
}
public function multiply($number1, $number2){
if(is_numeric($number1) && is_numeric($number2)){
return $number1*$number2;
}else{
echo "values should be numeric.";
}
}
public function divide($number1, $number2) {
if(is_numeric($number1) && is_numeric($number2) && $number2 != 0){
return $number1/$number2;
}else{
echo "Values should be numeric and divisor shouldn't be zero.";
}
}
}
$calc = new Calculator;
echo $calc->add(1,3);
echo "<br>";
echo $calc->subtract(4,3);
echo "<br>";
echo $calc->multiply(2,3);
echo "<br>";
echo $calc->divide(10,2);
?>
4
1
6
5
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.