What does putchar('\n') mean?
What does putchar('\n') mean?
putchar('\n') means outputting a newline character, that is, realizing a carriage return Line break function.
Code analysis:
● putchar is a character output function, which can only output one character at a time. For example:
putchar('a'); // 输出字符'a' putchar('abc'); // 输出字符'c' ，多个字符时输出最后一个字符
● '\n' is an escape character, representing a newline character
In C language, it starts with a backslash, followed by a character or a sequence of numbers To represent a character amount, called an escape character. There are mainly three forms:
1. Backslash followed by specific characters, such as '\n'
2. Backslash followed by 1 to 3 octal digits, such as ' \101'
3. A backslash followed by 1~2 hexadecimal digits (starting with x), such as '\x1A'
Recommended learning: c language video Tutorial
The above is the detailed content of What does putchar('\n') mean?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1378
52
PHP format rows to CSV and write file pointer
Mar 22, 2024 am 09:00 AM
This article will explain in detail how PHP formats rows into CSV and writes file pointers. I think it is quite practical, so I share it with you as a reference. I hope you can gain something after reading this article. Format rows to CSV and write to file pointer Step 1: Open file pointer $file=fopen("path/to/file.csv","w"); Step 2: Convert rows to CSV string using fputcsv( ) function converts rows to CSV strings. The function accepts the following parameters: $file: file pointer $fields: CSV fields as an array $delimiter: field delimiter (optional) $enclosure: field quotes (
How to determine whether there is a newline character in php
Nov 04, 2022 am 09:56 AM
How to determine whether there is a newline character in PHP: 1. Create a PHP sample file; 2. Define a string containing a newline character; 3. Pass "if(strstr($string, "\n")) {echo 'New line break found';}else {echo 'not found';}" can be used to determine whether there is a newline character.
What is the use of ireport line breaks?
Dec 21, 2023 am 10:36 AM
In ireport, you can use line breaks to wrap text. A newline character is a special character used to indicate where text should break.
How to use python newline character\n
Mar 25, 2024 am 10:37 AM
In Python, the newline character \n inserts a newline character into a string, breaking a line at a specific position. Use triple quotes (''' or """) to wrap the string, and newlines will be automatically preserved. This helps to flexibly control line breaks and format the output text.
How to add line breaks in HTML textbox?
Sep 04, 2023 am 11:05 AM
To add a newline character to an HTML text area, we can use the HTML newline tag to insert a newline character anywhere. Alternatively, we can also use the CSS property "white-space:pre-wrap" to automatically add line breaks to the text. This is particularly useful when displaying preformatted text in a text area. So let’s discuss ways to add line breaks. Method creates a text area in HTML and assigns it an id. Create a button that, when clicked, will split the text of the text area using line breaks. Now create a function that separates text into newlines. The code of this function is -functionreplacePeriodsWithLineBreaks()
What is the difference between putchar and printf
Aug 22, 2023 pm 01:55 PM
The difference between putchar and printf: 1. The parameter type of putchar is int, and the parameter type of printf is string; 2. putchar can only output one character, and printf can output multiple characters; 3. putchar cannot format output, but printf can format it. output; 4. putchar has no return value, printf returns the number of characters successfully output; 5. putchar outputs to the console, printf is not limited to output to the console; 6. performance, etc.
What is the function of putchar()
Jan 07, 2021 am 11:14 AM
The function of putchar() is to output a character to the terminal; the syntax structure of putchar is "int putchar(int char)", which means writing the character specified by the parameter char to the standard output stdout; putchar is a C library function, included in C In the standard library <stdio.h>.
A brief analysis of escaping newline characters in PHP
Mar 23, 2023 pm 05:20 PM
PHP is a very powerful programming language that can easily complete various tasks, including string processing. When processing strings, we can use escape characters in PHP to process special characters, such as single quotes, double quotes, and newline characters. This article will focus on escaping newlines in PHP.
