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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 16: Exceptions - String to Integer
  5. Discussions

Day 16: Exceptions - String to Integer

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990 Discussions

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  • siegfried_bozza
     + 0 comments

    Hi Can someone explain why this makes the test to fail (while the output is ok..) ? Thanks in advance

    'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', function(inputStdin) {
    inputString += inputStdin;
});

process.stdin.on('end', function() {
    inputString = inputString.split('\n');

    main();
});

function readLine() {
    return inputString[currentLine++];
}



function main() {
    const S = readLine();
    
     try {
        const parsed = parseInt(S, 10)
        if (!/^\d+$/.test(S) || isNaN(parsed)) {
            throw new Error("Bad String");
        }
        console.log(parsed);
    } catch (err) {
        console.log("Bad String");
    }
}

  • syed_imraan92
     + 0 comments
    C#

        string s = Console.ReadLine() ?? "";
        int ints = 0;
        try 
        {
            ints = int.Parse(s);
            Console.Write($"{ints}");
        }
        catch
        {
            Console.Write("Bad String");
        }

  • cspraveen082
     + 0 comments

    i dont know why my answer is wrong the output ic correct-#!/bin/python3

    import sys

    if name == 'main': S = input().strip() # Read input and strip leading/trailing whitespaces

    try:
    # Try to convert the string to an integer
    print(int(S))
except ValueError:
    # If it fails, print "Bad String"
    print("Bad String")

  • christian223
     + 0 comments

    Here's the ugly Typescript that doesn't use conditionals, lol. 

    function fail() {
    throw new Error("Not an int")
}

function main() {
    const S: string = readLine();
    try {
        const num = Number(S)
        const test = !Number.isInteger(num) && fail()
        console.log(num)
    } catch (e) {
        console.log("Bad String")
    }
}

  • tkooger
     + 1 comment

    I don't think you can actually complete this task using Typescript as the resulting number is just NaN and throwing your own error will fail becasue you have an if statement.