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10 Modules
Which of the following statements correctly declares a mutable variable in Rust?
let x: i32 = 5;
let mut x: i32 = 5;
var x: i32 = 5;
let x = 5;
What is the default data type for a floating-point number in Rust?
f32
f64
i32
u32
Which of the following is a valid way to create a constant in Rust?
const PI: f64 = 3.14;
let PI: f64 = 3.14;
static PI: f64 = 3.14;
const PI = 3.14;
What will be the output of the following code snippet?
let x = 10; let y = &x; println!("{}", y);
10
&10
Error: cannot print reference
Error: mismatched types
Which of the following types can be used to represent a boolean value in Rust?
bool
boolean
b
bools
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10 Modules