How to use Console.WriteLine() in C#

The usage of Console.WriteLine() in C# requires specific code examples

Console.WriteLine() in C# is a very commonly used method for Output a line of text to the console. Its function is similar to the print() function or println() function in other programming languages.

Using Console.WriteLine() is very simple. Just write the text to be output in the brackets and press Enter. The following uses some specific code examples to further explain how to use it.

Example 1: Output simple text

Console.WriteLine("Hello, World!");

The above code will output a line of text on the console, the content is "Hello, World!".

Example 2: Output the value of the variable

int num = 10;
Console.WriteLine("The value of num is: " + num);

The above code defines an integer variable num and assigns it a value of 10. Then output the value of the variable num to the console through Console.WriteLine(). The output text content is "The value of num is: 10".

Example 3: Formatted output

string name = "John";
int age = 25;
Console.WriteLine("My name is {0} and I am {1} years old.", name, age);

The above code defines a string variable name with a value of "John", and an integer variable age with a value of 25. Then format the values ​​of these two variables and output them to the console through Console.WriteLine(). The output text content is "My name is John and I am 25 years old."

Example 4: Output multiple lines of text

Console.WriteLine("This is line 1.");
Console.WriteLine("This is line 2.");

The above code will output two lines of text to the console in sequence, namely "This is line 1." and "This is line 2." .

In addition to outputting text, Console.WriteLine() can also output other types of data, such as numbers, Boolean values, etc. The compiler automatically converts other types of data to strings on output.

Summary:
Console.WriteLine() is a very commonly used method in C#, used to output a line of text to the console. It can output simple text, variable values, and formatted output. Using Console.WriteLine() is very simple, just write the text or variable to be output within the brackets. The compiler automatically converts other types of data to strings on output. This method is very practical when debugging and testing code, and can help developers quickly check the running status of the program.

The above is the detailed content of How to use Console.WriteLine() in C#. For more information, please follow other related articles on the PHP Chinese website!