What are some examples of function scope in programming?

What are some examples of function scope in programming?

Function scope refers to the visibility of variables within a function. For example, a variable declared inside a function cannot be accessed outside of it.

Can you give me a code example?

Sure! Here's a simple example in JavaScript:

function myFunction() {
    var localVar = 'I am local';
    console.log(localVar);
}
myFunction(); // Outputs: I am local
console.log(localVar); // ReferenceError: localVar is not defined

What happens if I declare a variable with the same name outside the function?

If you declare a variable with the same name outside the function, the function's local variable will not affect the outer variable. They are treated as separate.

Can you explain block scope as well?

Certainly! Block scope is created by curly braces {}. Variables declared with let or const inside a block are not accessible outside of it.