📘 Lesson  ·  Lesson 48

Calculator (Switch Case)

About

A simple calculator using switch case to choose the operation — a classic beginner PHP program.

Calculator Code

$a = 10; $b = 5; $op = "+";

switch ($op) {
    case "+": echo $a + $b; break;   // 15
    case "-": echo $a - $b; break;
    case "*": echo $a * $b; break;
    case "/": echo ($b != 0) ? $a / $b : "Cannot divide by zero"; break;
    default: echo "Invalid operator";
}

Summary

  • switch picks the operation based on the operator.
  • Always check for divide-by-zero before dividing.

परिचय

Operation चुनने के लिए switch case वाला simple calculator — एक classic beginner PHP program।

Calculator Code

$a = 10; $b = 5; $op = "+";

switch ($op) {
    case "+": echo $a + $b; break;   // 15
    case "-": echo $a - $b; break;
    case "*": echo $a * $b; break;
    case "/": echo ($b != 0) ? $a / $b : "Cannot divide by zero"; break;
    default: echo "Invalid operator";
}

सारांश

  • switch operator के आधार पर operation चुनता है।
  • Divide करने से पहले हमेशा divide-by-zero जाँचें।
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