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in Technique[技术] by (71.8m points)

c# - cs0103: The name 'input' does not exist in the current context


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Try changing the beginning of your method from:

public static void CalculateTotalCost()
{
  retry:

to:

public static void CalculateTotalCost()
{
  string input;
  retry:

Also, please don't use goto.

There are much better ways.

Try using a loop:

string name = null;

while (name == null)
{
    Console.WriteLine("Please enter meaningful information");
    string input = Console.ReadLine();
    switch (input)
    {
        case "Teotihuacan":
            name = input;
            break;
        default:
            break;
    }
}

Console.WriteLine($"You selected: {name}");

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