C# Sharp Exercises: Check if a given string contains only lowercase or uppercase characters

C# Sharp Basic: Exercise-69 with Solution

Write a C# Sharp program to check if a given string contains only lowercase or uppercase characters.

Sample Solution:

C# Sharp Code:

using System;
using System.Linq;
namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(test("PHP"));
            Console.WriteLine(test("python"));
            Console.WriteLine(test("JavaScript"));
        }
        public static bool test(string str1)
        {
            return str1 == str1.ToUpper() | str1 == str1.ToLower();
        }
    }
}

Sample Output:

True
True
False

Flowchart:

Sample Solution-1:

C# Sharp Code:

using System;
using System.Linq;
namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(test("PHP"));
            Console.WriteLine(test("python"));
            Console.WriteLine(test("JavaScript"));
        }
        public static bool test(string str1)
        {
            return str1 == str1.ToUpper() || str1 == str1.ToLower();
        }
    }
}

Sample Output:

True
True
False

Flowchart:

C# Sharp Code Editor:

Improve this sample solution and post your code through Disqus

Previous: Write a C# Sharp program to count a specified character (both cases) in a given string.
Next: Write a C# Sharp program to remove the first and last elements from a given string.