C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Collections.Generic;

public class Program
{
	public static void Main()
	{
		Console.WriteLine("ML ACT 6");
		Console.WriteLine("PEDUCHE, JOHN VINCENT B.");
		
		//Variables Declared
		int msize;
		int ossize;
		int jobuser;
		int userinput;
		int num = 1;
		//User Input Memory Size and OS Size
		Console.Write("Enter the memory size: ");
		string memory = Console.ReadLine();
		if (Int32.TryParse(memory, out msize) == true)
		{
			if(msize <=0){
				Console.WriteLine("Zero and Negative Numbers are not allowed.");
			}else{
				Console.Write("Enter the OS Size: ");
				string osize = Console.ReadLine();
				if (Int32.TryParse(osize, out ossize) == true)
				{
					if (ossize >= msize || ossize <=0)
					{
						Console.WriteLine("Invalid Input...");
					}else{
						//User Job Input
						List<int> jobs = new List <int>();
						Console.WriteLine();
						for (int job=0; job <6; job++)
						{
							Console.WriteLine("Enter the memory size: " + msize + "K");
							Console.WriteLine("Enter the memory size: " + ossize + "K");
							Console.WriteLine("Job {0}/6", job+1);
							string joblist = Console.ReadLine();
							if (Int32.TryParse(joblist, out jobuser) == true)
							{
								if (jobuser < 0)
								{
									Console.WriteLine("Invalid Input due to Negative Numbers are not accepted. Press any key to continue");
									string reset = Console.ReadLine();
									job--;
								}else{
									jobs.Add(jobuser);
								}
							}else{
								Console.WriteLine("Invalid Input!! Press any key to continue");	
								string reset = Console.ReadLine();
								job--;
							}
					}
					List<int> input = new List<int>();
					int reserve = msize - ossize;
					int mspace = reserve;
					for (int j=0; j < jobs.Count; j++){
						Console.Clear();
						for (int i=0;i<jobs.Count;i++){
							Console.WriteLine("Job: {0} {0}K", i+1, jobs[i]);
						}
						//Allocation and Deallocation Process
						Console.WriteLine("Memory Size: {0}K", msize);
						Console.WriteLine("OS Size: {0}K", ossize);
						Console.WriteLine("Unused Space/Size: {0}K", reserve);
						Console.WriteLine("Press 0 for Allocation / 1 for Deallocation: ");
						string user = Console.ReadLine();
						if (Int32.TryParse(user, out userinput)==true){
						
							if (userinput ==0){
							}
								if (input.Count == 1)
								{
									Console.WriteLine();
									Console.Write("Unable to allocate the job.");
									string reset = Console.ReadLine();
									Console.Clear();
									j--;
								}
								else
								{
									if (jobs[j] > reserve){
									Console.WriteLine();
									Console.Write("Unable to allocate the job. Press any key to continue");
									string reset = Console.ReadLine();
									Console.Clear();
									++num;
								}else{
									Console.WriteLine("Job" + num + "has been loaded");
									string reset = Console.ReadLine();
									Console.Clear();
									input.Add(jobs[j]);
									reserve = reserve - jobs[j];
									++num;
							    }
						   }
						}else if (userinput ==1)
							{
								if (input.Count ==0){
									Console.WriteLine("Unable to deallocate due to no jobs are available.");
									Console.Write("Press any key to continue.");
									string reset = Console.ReadLine();
									Console.Clear();
									j--;
								}else{
									Console.WriteLine("Deallocation Complete for Job {0}", num - 1);
									Console.Write("Press any key to continue");
									string reset = Console.ReadLine();
									input.RemoveAt(0);
									Console.Clear();
									reserve = mspace;
							}
						}
						else
						{
							Console.WriteLine("Invalid Input!! Press any key to continue.");
							string reset = Console.ReadLine();
							Console.Clear();
							j--;
						}else{
							Console.WriteLine("INVALID INPUT. PRESS ANY KEY TO CONTINUE");
							string reset = Console.ReadLine();
							Console.Clear();
							j--;
						}
					
					}

							
				 }
				}
				Console.WriteLine("End Program");
			}
		}else{
			Console.WriteLine("Sorry! Invalid Input...");
		}
	}
}

​x
 
using System;
using System.Collections.Generic;
​
public class Program
{
    public static void Main()
    {
        Console.WriteLine("ML ACT 6");
        Console.WriteLine("PEDUCHE, JOHN VINCENT B.");
        
        //Variables Declared
        int msize;
        int ossize;
        int jobuser;
        int userinput;
        int num = 1;
        //User Input Memory Size and OS Size
        Console.Write("Enter the memory size: ");
        string memory = Console.ReadLine();
        if (Int32.TryParse(memory, out msize) == true)
        {
            if(msize <=0){
                Console.WriteLine("Zero and Negative Numbers are not allowed.");
            }else{
                Console.Write("Enter the OS Size: ");
                string osize = Console.ReadLine();
                if (Int32.TryParse(osize, out ossize) == true)
                {
                    if (ossize >= msize || ossize <=0)
                    {
                        Console.WriteLine("Invalid Input...");
                    }else{
                        //User Job Input
                        List<int> jobs = new List <int>();
                        Console.WriteLine();
                        for (int job=0; job <6; job++)
                        {
                            Console.WriteLine("Enter the memory size: " + msize + "K");
                            Console.WriteLine("Enter the memory size: " + ossize + "K");
                            Console.WriteLine("Job {0}/6", job+1);
                            string joblist = Console.ReadLine();
                            if (Int32.TryParse(joblist, out jobuser) == true)
                            {
                                if (jobuser < 0)
                                {
                                    Console.WriteLine("Invalid Input due to Negative Numbers are not accepted. Press any key to continue");
                                    string reset = Console.ReadLine();
                                    job--;
                                }else{
                                    jobs.Add(jobuser);
                                }
                            }else{
                                Console.WriteLine("Invalid Input!! Press any key to continue"); 
                                string reset = Console.ReadLine();
                                job--;
                            }
                    }
                    List<int> input = new List<int>();
                    int reserve = msize - ossize;
                    int mspace = reserve;
                    for (int j=0; j < jobs.Count; j++){
                        Console.Clear();
                        for (int i=0;i<jobs.Count;i++){
                            Console.WriteLine("Job: {0} {0}K", i+1, jobs[i]);
                        }
                        //Allocation and Deallocation Process
                        Console.WriteLine("Memory Size: {0}K", msize);
                        Console.WriteLine("OS Size: {0}K", ossize);
                        Console.WriteLine("Unused Space/Size: {0}K", reserve);
                        Console.WriteLine("Press 0 for Allocation / 1 for Deallocation: ");
                        string user = Console.ReadLine();
                        if (Int32.TryParse(user, out userinput)==true){
                        
                            if (userinput ==0){
                            }
                                if (input.Count == 1)
                                {
                                    Console.WriteLine();
                                    Console.Write("Unable to allocate the job.");
                                    string reset = Console.ReadLine();
                                    Console.Clear();
                                    j--;
                                }
                                else
                                {
                                    if (jobs[j] > reserve){
                                    Console.WriteLine();
                                    Console.Write("Unable to allocate the job. Press any key to continue");
                                    string reset = Console.ReadLine();
                                    Console.Clear();
                                    ++num;
                                }else{
                                    Console.WriteLine("Job" + num + "has been loaded");
                                    string reset = Console.ReadLine();
                                    Console.Clear();
                                    input.Add(jobs[j]);
                                    reserve = reserve - jobs[j];
                                    ++num;
                                }
                           }
                        }else if (userinput ==1)
                            {
                                if (input.Count ==0){
                                    Console.WriteLine("Unable to deallocate due to no jobs are available.");
                                    Console.Write("Press any key to continue.");
                                    string reset = Console.ReadLine();
                                    Console.Clear();
                                    j--;
                                }else{
                                    Console.WriteLine("Deallocation Complete for Job {0}", num - 1);
                                    Console.Write("Press any key to continue");
                                    string reset = Console.ReadLine();
                                    input.RemoveAt(0);
                                    Console.Clear();
                                    reserve = mspace;
                            }
                        }
                        else
                        {
                            Console.WriteLine("Invalid Input!! Press any key to continue.");
                            string reset = Console.ReadLine();
                            Console.Clear();
                            j--;
                        }else{
                            Console.WriteLine("INVALID INPUT. PRESS ANY KEY TO CONTINUE");
                            string reset = Console.ReadLine();
                            Console.Clear();
                            j--;
                        }
                    
                    }
​
                            
                 }
                }
                Console.WriteLine("End Program");
            }
        }else{
            Console.WriteLine("Sorry! Invalid Input...");
        }
    }
}

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