C# error "Type 'string' does not contain a definition for 'equals' and no extension method 'equals' of type 'string' could be found."


Hi please I'm converting 12-hour AM/PM format, to military 24-hour time format using C# Console app.

Note: Midnight is 12:00:00AM on a 12-hour clock, and 00:00:00 on a 24-hour clock. Noon is 12:00:00PM on a 12-hour clock, and 12:00:00 on a 24-hour clock.

My code is that :

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

class Solution {

 /*
  * Complete the timeConversion function below.
  */
 static string timeConversion(string s) {
  /*
   * Write your code here.
   */
  String result = string.Empty;
  String strconv = s.Substring(0, 2);
  int convt = Int32.Parse(strconv);
  if (s.Substring(8).equals("AM")) {
   if (s.Substring(0, 2).equals("12")) {
    result = s.Substring(0, 8);
   }
  } else if (s.Substring(8).equals("PM")) {
   if (s.Substring(0, 2).equals("24") || convt == 12) {
    result = "00" + s.Substring(0, 2);
   } else if (convt < 12) {
    convt = convt + 12;
    result = convt + s.Substring(2, 8);
   }
  }
  return result;
 }

 static void Main(string[] args) {
  TextWriter tw = new StreamWriter(@System.Environment.GetEnvironmentVariable("OUTPUT_PATH"), true);
  string s = Console.ReadLine();
  string result = timeConversion(s);
  tw.WriteLine(result);
  tw.Flush();
  tw.Close();
 }
}

but When I am executing the above code getting error as below

solution.cs(18,28): error CS1061: Type `string' does not contain a definition for `equals' and no extension method `equals' of type `string' could be found. Are you missing an assembly reference?

Please, How can I fix that maybe I have missing an assembly reference but don't know how to resolve this.


Asked by:- LuneAgile
0
: 226 At:- 6/19/2018 4:51:13 PM
c# missing assembly






2 Answers
profileImage Answered by:- pika

You are not missing any namespace in your C# code, you are already using System for .Equals, "E" just need to be in capital letter 

Here is the code which worked for me when executed in my local Visual studio

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace TimeConversion
{
    class Program
    {
        /*
   * Complete the timeConversion function below.
   */
        static string timeConversion(string s)
        {
            /*
             * Write your code here.
             */
            String result = string.Empty;
            String strconv = s.Substring(0, 2);
            int convt = Int32.Parse(strconv);
            if (s.Substring(8).Equals("AM"))
            {
                if (s.Substring(0, 2).Equals("12"))
                {
                    result = s.Substring(0, 8);
                }
            }
            else if (s.Substring(8).Equals("PM"))
            {
                if (s.Substring(0, 2).Equals("24") || convt == 12)
                {
                    result = "00" + s.Substring(0, 2);
                }
                else if (convt < 12)
                {
                    convt = convt + 12;
                    result = convt + s.Substring(2, 8);
                }
            }
            return result;
        }

        static void Main(string[] args)
        {
            TextWriter tw = new StreamWriter(@"E:\Outputtime.txt", true);
            string s = Console.ReadLine();
            string result = timeConversion(s);
            tw.WriteLine(result);
            tw.Flush();
            tw.Close();
        }
    }
}

Here is the screenshot which shows Code/Output

time-conversion-csharp-min.png

As you can see in the above code you need to replace ".equals()" to ".Equals()".

1
At:- 6/19/2018 5:33:45 PM


profileImage Answered by:- LuneAgile

Thank you so much   pika :) .

0
At:- 6/19/2018 5:53:30 PM Updated at:- 6/19/2018 5:56:39 PM





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