Why not compiling

Question

It is not compiling when data type in foreach is string. It is compiling when data type in foreach is char. Problem is highlighted.

using System;

class Program
{
static void Main(string[] args)
{
string checkStr = "Address";

foreach (string c in checkStr)
Console.Write(c);

Console.ReadKey();
}
}

Vulpes · Answer

A string is essentially an ordered collection of chars or more formally the string class implements IEnumerable . When you iterate through a string using foreach you therefore iterate through its individual chars. This is why the foreach control variable needs to be a char not a string.

Maha · Answer

Thank you for your explanation.