What is the difference between string and string in c

One difference is that string is a C keyword and String you can use as variable name. String is conventional. NET name of this type and string is convenient C name. Here is simple program which presents difference between System. String is a class reference type defined the mscorlib in the namespace System. In other words, System. String is a type in the CLR. And string is documented like a keyword C Reference or like any basic C language construct e. As pointed out, they are the same thing and string is just an alias to String.

For what it's worth, I use string to declare types - variables, properties, return values and parameters. This is consistent with the use of other system types - int, bool, var etc although Int32 and Boolean are also correct. I use String when using the static methods on the String class, like String.

Split or String. I feel that this makes more sense because the methods belong to a class, and it is consistent with how I use other static methods. Than compiler will show potential fix to optimize it and after applying that fixe it will look like this.

I prefer to use string because this type is used so much that I don't want the syntax highlighter blending it in with all the other classes. Although it is a class it is used more like a primitive therefore I think the different highlight colour is appropriate.

If you right click on the string keyword and select Go to definition from the context menu it'll take you to the String class - it's just syntactic sugar but it improves readability imo. A string is a sequential collection of characters that is used to represent text. A String object is a sequential collection of System. Char objects that represent a string; a System. Char object corresponds to a UTF code unit.

The value of the String object is the content of the sequential collection of System. Char objects, and that value is immutable that is, it is read-only. For more information about the immutability of strings, see the Immutability and the StringBuilder class section in msdn. Note : answer is extracted from msdn help section. You can see the full content here in msdn String Class topic under Remarks section. String or System. As far as I know, string is just an alias for System. String , and similar aliases exist for bool , object , int String in full.

About which is the best to use, I guess it's a matter of taste. Personally I prefer string , but I it's not a religious issue. As you already know string is just alias for System. But what should I use? In my case, I love to use string rather than use System. String because String requires a namespace using System; or a full name System. String namespace. So would be better using string than String. In fact, every C type has an equivalent in.

As another example, short and int in C map to Int16 and Int32 in. So, technically there is no difference between string and String, but In C , string is an alias for the String class in. NET framework. I would say that they are interchangeable and there is no difference when and where you should use one or the other. String is the class of string.

If you remove System namespace from using statements, you can see that String has gone but string is still here. Like int and Int32 short and Int16 long and Int64 So the keywords are just some words that uses a class. These keywords are specified by C so Microsoft, because C is Microsoft's. Briefly, there's no difference.

Using string or String. That doesn't matter. They are same. It also shows the creators of the language prefer just string when difining variables spoiler: when calling members they prefer String.

Image result for string vs String www. Another little difference is that if you use the String class, you need to import the System namespace, whereas you don't have to import namespace when using the string keyword.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. What is the difference between String and string in C? Ask Question. Asked 13 years, 3 months ago. Active 25 days ago. Viewed 1. And what are the differences? Improve this question. Mapper, but the fact remains that string is a lexical construct of the C grammar whereas System.

String is just a type. Regardless of any explicit difference mentioned in any spec, there is still this implicit difference that could be accomodated with some ambiguity.

The language itself must support string in a way that the implementation is not quite so obligated to consider for a particular class in the BCL. KirkWoll: According to the language specification, the language itself must consider string to be exactly the same as the BCL type System. String , nothing else. That is not ambiguous at all. Of course, you can implement your own compiler, using the C grammar, and use all of the tokens found like that for something arbitrary, unrelated to what is defined in the C language specification.

However, the resulting language would only be a C lookalike, it could not be considered C. You can use string without a using directive for System. You can't do that with String. Like String. The lower case string and then all the int,long,byte,etc are special keywords, that define a compiling type. Yes, can define a string as String or string because of historical reason needed for compatibility when people migrated VB5 and VB6 to.

NET — And we are paying for that choice till today, instead of forcing the convention from the begging to be correct. Not many people remember that but I do. So that is where the damned Alias come from. Thank you as well.. And your story of your adventures across the years of learning programming tells this. I was told during an interview that the difference is that String is immutable and therefor safe to access from other threads while string is not….

I cant seem to find the evidence to support their claim though…. Not true. There is actually a big difference, and here is why.

Not exactly accurate. String is a class which gives you a rich set of functions and properties to manipulate the string. Here, you can see that string is used for declaring variable whereas String is used for accessing the static method String. Concat that joins two strings together. What is difference between String and string in C. Leighton Burley Updated date Oct 31, What is the difference between System. Config and Machine. Config File.