How to check more than one value from dictionary in an if statement?-CodePudding

Im just starting to learn unity and saw this task in one of my c# studying books. I have to create a code using an if statement inside foreach, so that it checks if i can afford each item in the dictionary, but i have no idea how to check all of them or even once specific, so i could write if 3 times for example.

At the moment my Log shows all the items and thier values, but shows if i can afford only the first one. What should i put in the IF brackets to check every value after it appears it Log?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LearningCurve : MonoBehaviour
{
    public int currentGold = 3;
    void Start()
    {
        Dictionary<string, int> itemInventory = new Dictionary<string, int>()
        {
            {"Potions", 4 },
            {"Daggers", 3 },
            {"Lockpicks", 1 }
        };

        foreach (KeyValuePair<string, int> itemCost in itemInventory)
        {
            Debug.LogFormat("Item {0} - {1}g", itemCost.Key, itemCost.Value);

            if (currentGold >= itemCost.Value)
            {
                Debug.Log("I can afford that!");
            }
        }
    }

CodePudding user response：

I am not sure if I understood the question but I will try to give you a basic overview of what is happening in the code you posted. Let's start with the if, how an if block works is simple you put a boolean bool for short in C# that can have two different values true and a false, inside the if(BOOL VALUE) and if the value is true it will run the code between the { CODE TO RUN }. Let's refactor the code a bit to see what is going on here.

Dictionary<string, int> itemInventory = new Dictionary<string, int>()
    {
        {"Potions", 4 },
        {"Daggers", 3 },
        {"Lockpicks", 1 }
    };

    foreach (KeyValuePair<string, int> itemCost in itemInventory)
    {
        
        Debug.LogFormat("Item {0} - {1}g", itemCost.Key, itemCost.Value);
        bool iCanBuyitem = currentGold >= itemCost.Value;
        Debug.LogFormat("{0} >= {1} is {2}", currentGold, itemCost.Value,iCanBuyitem);
        if (iCanBuyitem)
        {
             Debug.LogFormat("I can buy {0} ", itemCost.Key);
        }else
        {
             Debug.LogFormat("I can't buy {0} ", itemCost.Key);
        }
    }

Unlike in mathematics in programing symbol >= is not an equality symbol but something called a binary operator that takes two variables of one of the many numeric types in c# in your dictionary they are integers Dictionary<string, int> and produce a bool value that tells you if one number is more or equal to a second number, it's a method that has something similar to the the following signature public bool FirstIsBiggerOrEqualToSecond(int first, int second) Here is a dotnet fiddle demonstrating the output https://dotnetfiddle.net/oWlYlY

CodePudding user response：

Read the question header You mean, if you want to put two or more conditions inside the IF, you have to use && operator:

if (currentGold >= itemCost.Value && currentGold <= 15)
{
    Debug.Log("I have enough gold to buy this item and it's cheap.");
}

CodePudding user response：

Testing the code snippet provided two logs within the Console: "I can afford that!". Through this, I have determined that the issue lies within your snippet implementation. I suggest you check if you have enabled Collapse within the Console.

I have attached an Imgur link for reference. Console Log