C#•2y ago

❔ ✅ error CS0150 A constant value is expected

using MoreLinq;

string[] cards = {"rock", "paper", "scissors"}; 

Dictionary<string, string> winningSituations = new Dictionary<string, string>
{
    {"rock", "scissors"},
    {"paper", "rock"},
    {"scissors", "paper"}
};

Random random = new Random();

string botChoice = cards.Shuffle(random).First();
Console.WriteLine(botChoice);

Console.WriteLine("Enter your choice: (rock, paper, scissors)");
string userChoice = Console.ReadLine().ToLower();

if (!cards.Contains(userChoice))
{
    Console.WriteLine("Invalid input!!!");
}
if (userChoice == botChoice)
{
    Console.WriteLine("Draw!");
}else
{
    switch (winningSituations[userChoice])
    {
        case botChoice:
            Console.WriteLine("You Won the Round!");
            break;
        default:
            Console.WriteLine("You Lost the Round!");
            break;
    }
}

using MoreLinq;

string[] cards = {"rock", "paper", "scissors"}; 

Dictionary<string, string> winningSituations = new Dictionary<string, string>
{
    {"rock", "scissors"},
    {"paper", "rock"},
    {"scissors", "paper"}
};

Random random = new Random();

string botChoice = cards.Shuffle(random).First();
Console.WriteLine(botChoice);

Console.WriteLine("Enter your choice: (rock, paper, scissors)");
string userChoice = Console.ReadLine().ToLower();

if (!cards.Contains(userChoice))
{
    Console.WriteLine("Invalid input!!!");
}
if (userChoice == botChoice)
{
    Console.WriteLine("Draw!");
}else
{
    switch (winningSituations[userChoice])
    {
        case botChoice:
            Console.WriteLine("You Won the Round!");
            break;
        default:
            Console.WriteLine("You Lost the Round!");
            break;
    }
}

11 Replies

Ryan-T1412•2y ago

idk why i'm getting this error but its first time that i tried to use a module i don't think switch case causing the error

ero•2y ago

it is the case causing te error

Ryan-T1412•2y ago

i have no idea string botChoice = cards.Shuffle(random).First(); maybe this

Susko3•2y ago

hint: don't use a switch-case in this scenario as the string isn't a compile-time constant

Ryan-T1412•2y ago

so i can not use switch-case with strings

ero•2y ago

yes you can

Ryan-T1412•2y ago

or dictionary

ero•2y ago

but only when they're constant

Susko3•2y ago

https://learn.microsoft.com/en-us/dotnet/csharp/misc/cs0150

Compiler Error CS0150

Ryan-T1412•2y ago

ok i replaced switch-case with if else statement

    if (winningSituations[userChoice] == botChoice)
    {
        Console.WriteLine("You Won the Round!");
    }else
    {
        Console.WriteLine("You Lost the Round!");
    }

    if (winningSituations[userChoice] == botChoice)
    {
        Console.WriteLine("You Won the Round!");
    }else
    {
        Console.WriteLine("You Lost the Round!");
    }

now it works !close

Accord•2y ago

Closed! Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ ✅ error CS0150 A constant value is expected