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This article mainly introduces the basic knowledge of variables in C# and has a good reference value. Let’s take a look with the editor below
Using variables is divided into 3 steps: declaration, assignment, and use.
The syntax for declaring variables: data type variable name;
The syntax for assigning values to variables: variable name=value;
namespace Test { class Program { static void Main(string[] args) { int age;//声明变量,类型为int,变量名为age age = 18;//给变量age赋值为18 Console.WriteLine(“我今年”+age=“岁”);//打印age age = 19;//修改了变量age的值 Console.WriteLine(“我明年”+age+“岁”);//打印age } } }
The running result is:
The declaration and assignment of variables can be completed at the same time, in the Main() method of the above code The first two lines can be rewritten as:
int age=18;//Declaration and assignment
Exercise questions:
static void Main(string[] args) { int age;//年龄 age = 18; age = 20; age = 20 + 1; Console.WriteLine(“我今年{0}岁”,age); age = age - 2; }
What this code prints is: I am 21 years old this year
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