Question

How to convert string to int in Rust

Answer 1

fn main() {
    let string = "763";
     
    let num : i32 = string.trim().parse().unwrap();
     
    println!("{}", num);
    println!("{}", num * 3);
  
}
 

 
 
/*
run:
     
763
2289
     
*/

 

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Answer 2

fn main() {
    let string = String::from("982");
    let num: i32 = string
	.trim()
    .parse()
    .expect("String cannot be converted to a number");

    println!("{}", num);
    println!("{}", num * 3);
 
}




/*
run:
    
982
2946
    
*/

 

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