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Rust program to check whether a character variable contains a digit or not

Given a character variable, we have to check whether it contains a digit or not using Rust program.
Submitted by Nidhi, on September 28, 2021

Problem Solution:

Here, we will create two-character variables and check created variable contains a digit or not.

Program/Source Code:

The source code to check a character variable contains a digit or not is given below. The given program is compiled and executed successfully.

// Rust program to check whether a character variable
// contains a digit or not

fn main() {
    let mut ch:char = '5';
    let mut ch1:char = 'B';
    
    if (ch >= '0' && ch <= '9')
    {
       println!("Character '{}' is a digit",ch);
    }
    else
    {
        println!("Character '{}' is not a digit",ch);
    }
    
    if (ch1 >= '0' && ch1 <= '9')
    {
       println!("Character '{}' is a digit",ch1);
    }
    else
    {
        println!("Character '{}' is not a digit",ch1);
    }
}

Output:

Character '5' is a digit
Character 'B' is not a digit

Explanation:

Here, we created two characters variables ch and ch1 that are initialized with '5' and 'B' respectively. Then we checked the given characters contains digits or not and printed the appropriate message.

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