/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 votes137 views2 answers
Vs code ahk folding
TypeScript
6 votes135 views6 answers
Remove special characters from string javascript
TypeScript
0 vote128 views1 answer
How to use array pop in typescript
TypeScript
3 votes119 views1 answer
Adonis validator optional
TypeScript
-1 vote136 views1 answer
Is brackets a good code editor
TypeScript
3 votes124 views3 answers
E.target.value typescript
TypeScript
51 votes333 views6 answers
Duplicate in sql
TypeScript
0 vote132 views3 answers
How to send tweets in c# WPF
TypeScript
0 vote116 views1 answer
How to combine types in typescript
TypeScript
0 vote174 views2 answers
Error: "Filesystem" plugin is not implemented on android
TypeScript