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C# {0}

I was looking at C# playing with but when I put a {1} instead of a {0} it said the code failed, and I just want to know the importance and why it does that. Ex. name = Console.ReadLine() Console.WriteLine("Hello {0}", name) Output Hello (inputted name) name = Console.ReadLine() Console.WriteLine("Hello {0}", name) Output ID-10T 3RR0R

17th Feb 2022, 6:11 PM
Kyle Mastropolo
Kyle Mastropolo - avatar
3 Respuestas
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name = Console.ReadLine() Console.WriteLine("Hello {0}", name) ; After the string "Hello {0}" are a list of arguments to be replaced in the string at respective positions.. Indexes are starts from 0 {n} is just replaced by n'th argument passed. If you put {1} , instead of {0} in above code, then it's error because you have only one argument but trying to access (1+1) second argument... Try this : name = Console.ReadLine() Console.WriteLine("Hello {0} {1} {2} {3} " , name, "first", " Second", "third"); Hope it helps.. 2nd also works.. You may be about "Hello {1} "?
17th Feb 2022, 6:21 PM
Jayakrishna 🇮🇳
+ 1
It's an example to demonstrate this Farmating : Try to run this and see output. It outputs : "Hello (inputted name) first second third" I just using string literals (values) directly, than using variables {0} is replaced by your input into name {1} is replaced by "first" {2} is replaced by "second" {3} is replaced by "third" If you place {4} or {any 3+ number}, it give error because there only 4 numbers passed.. {0} to {3} are valid. Hope it clears.
17th Feb 2022, 6:54 PM
Jayakrishna 🇮🇳
0
Yes sorry, that was a typo, can u explain more on the Console.WriteLine(“Hello{0}{1}{2}{3}”, name, “first”, “second”, “third”); Like how it would look with an example input
17th Feb 2022, 6:28 PM
Kyle Mastropolo
Kyle Mastropolo - avatar