Home » Rust » Rust Programs

Rust program to convert a string into an integer

Rust | Convert a string into an integer: Given a string, we have to convert it into an integer.
Last Updated : October 08, 2021

Problem Statement

In this program, we will convert a string into an integer using the parse() and unwrap() function. After that, we printed the result.

Program/Source Code

The source code to convert a string into an integer is given below. The given program is compiled and executed successfully.

// Rust program to convert a 
// string into an integer

fn main() 
{
    let mut strVar = "123";
    let mut intVar:i8 = 0;
    
    intVar=strVar.parse().unwrap();
    println!("Number is : {}",intVar);
}

Output

Number is : 123

Explanation

Here, we created a variable strVar of &str type. Then we assigned the value of strVar variable into the i8 variable using parse() and unwrap() functions. After that, we printed the result.

Rust Basic Programs »

---