Introduction to C# Basics-Introduction to Variables

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

The above is the detailed content of Introduction to C# Basics-Introduction to Variables. For more information, please follow other related articles on the PHP Chinese website!