Console.Write("Enter the first number: ");
int num1 = int.Parse(Console.ReadLine());
Console.Write("Enter the second number: ");
int num2 = int.Parse(Console.ReadLine());
Console.Write("Enter the third number: ");
int num3 = int.Parse(Console.ReadLine());
Console.Write("Enter the fourth number: ");
int num4 = int.Parse(Console.ReadLine());
Console.Write("Enter the last number: ");
int num5 = int.Parse(Console.ReadLine());
if( (num1 <= num2) && (num1 <= num3) && (num1 <= num4) && (num1 <= num5) )
Console.WriteLine("The first number ({0}) was the smallest.", num1);
else if ( (num2 <= num3) && (num2 <= num4) && (num2 <= num5) )
Console.WriteLine("The second number ({0}) was the smallest.", num2);
else if ( (num3 <= num4) && (num3 <= num5) )
Console.WriteLine("The third number ({0}) was the smallest.", num3);
Console.WriteLine("The fourth number ({0}) was the smallest.", num4);
Console.WriteLine("The last number ({0}) was the smallest.", num5);