/TypeScript/How to validate if all characters enetred in a string are alphabets and then reprompt user

How to validate if all characters enetred in a string are alphabets and then reprompt user

#include <iostream>
#include <string>
#include <cctype>

// check for only alphabetical letters in string (or spaces)
bool lettersOrSpaces(const std::string& str)
{
    for (size_t i = 0; i < str.size(); i++)
    {
        // make sure each character is A-Z or a space
        if (! std::isalpha(str[i]) && ! std::isspace(str[i]))
        {
            return false; ///< at least one "no match"
        }
    }
    return true;  ///< all characters meet criteria
}

int main()
{
    std::string townName;
    std::cout << "Enter name of town: ";
    while (std::getline(std::cin, townName) && !lettersOrSpaces(townName))
    {
        std::cout << "Enter the town name - alphabet only: ";
    }
    std::cout << "The name of town is: " << townName << std::endl;

    return 0;
}

Source: stackoverflow.com

Similar codes

2 votes110 views1 answer
Adonis many to many
TypeScript
0 vote122 views2 answers
How to set value to readonly property in typescript
TypeScript
4 votes103 views3 answers
Date time format typescript
TypeScript
0 vote107 views1 answer
Onblur vs valuechange
TypeScript
55 votes182 views6 answers
How to get rid of bullet points in css
TypeScript
0 vote107 views1 answer
Compy mongodb database with indexes
TypeScript
0 vote104 views2 answers
Giving arguments to main function in c
TypeScript
0 vote105 views1 answer
Error TS2564: Property
TypeScript
23 votes109 views3 answers
Check if file exists bash
TypeScript
1 vote112 views1 answer
Dart wait 5 seconds
TypeScript