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Puzzle 3: Type Conversion

Explore the concept of type conversion in Rust through this puzzle. Learn to predict program outputs involving data types and understand how Rust handles type conversions and precision within its memory model.

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Guess the output

Before moving on to the explanation, try to guess the output of the following program. Good luck!

C++
fn main() {
  let x : u64 = 4_294_967_296; 
  let y = x as u32;
  if x == y as u64 {
    println!("x equals y."); 
  } else {
    println!("x does not equal y."); }
}

Quiz

Technical Quiz
1.

What is the output of the code above?

A.
[error] out of range!
B.
x equals y.
C.
x does not equal y.
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