How to solve the problem of local variable conflict in C#
In this issue, the editor will bring you about how to solve the conflict of local variables in C#. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.
A variable cannot be declared twice in the same scope, as shown in the following code error.
UsingSystem; usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks; namespaceConsoleApplication1 {class Program {static void Main (string [] args) {int a = 123; int a = 456;}
The compilation error is as follows:
Severity
Code
Description
Project
File
OK
Suppress display statu
Error
CS0128
A local variable named "a" has been defined in this scope.
ConsoleApplication1
E:1_workspace2_programme_language6_c#\ 20179\ varConflict\ ConsoleApplication1\ ConsoleApplication1\ Program.cs
fourteen
Activity
Warning
CS0219
The variable "a" has been assigned, but its value has never been used
ConsoleApplication1
E:1_workspace2_programme_language6_c#\ 20179\ varConflict\ ConsoleApplication1\ ConsoleApplication1\ Program.cs
thirteen
Activity
Warning
CS0219
The variable "a" has been assigned, but its value has never been used
ConsoleApplication1
E:1_workspace2_programme_language6_c#\ 20179\ varConflict\ ConsoleApplication1\ ConsoleApplication1\ Program.cs
fourteen
Activity
However, the following code is normal:
UsingSystem; usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks; namespaceConsoleApplication1 {class Program {static void Main (string [] args) {for (int a = 0 for a < 10; ABA +) {Console.WriteLine (a);} for (int a = 0 for a < 10; ABA +) {Console.WriteLine (a2);}}
The result of execution after compilation:
Reason: at the end of the first loop, the scope of a has jumped out of scope.
The above is the editor for you to share how to solve the problem of local variable conflicts in C#, if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.
