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This article mainly introduces the relevant knowledge of "case analysis of the use of C language escape characters". The editor shows you the operation process through the actual case, and the operation method is simple, fast and practical. I hope this article "case analysis of the use of C language escape characters" can help you solve the problem.

1. Recognize escape characters

All ASCII codes can be represented by "" plus numbers (usually octal digits). C defines some letters preceded by "" to represent common ASCII characters that cannot be displayed, such as, etc., which are called escape characters, because the following characters are not its original ASCII character meaning. The most common thing in learning c is to use line wrapping.

/ * transfer character code implementation * / printf ("hello"); printf (""); / / backspace character printf (""); / / newline printf ("a"); / / ring / / printf (""); / / horizontal tab / printf ("v"); / / vertical tab character printf ("") / / "indicates single quotation marks printf ("); / / "indicates single quotation marks

two。 Special form of escape character

What you need to remember in the c language string is * * "for", "for" * *

Open the application software with VS2013

Code 1:

System ("F:qq1BinQQScLauncher.exe")

Code two

System ("F:qq1BinQQScLauncher.exe")

For the software to recognize the location of the QQ application, you must use the

3.putchar output character / * putchar output character * / printf (""); putchar ("h"); / / h is a character, using single quotation marks to output putchar ("e"); putchar ("l"); putchar (104); / / h is a character, corresponding to the integer is 104 ASCII code putchar ("); putchar (" 101") / / ddd represents three-digit octal, and integers correspond to the characters of A.

Printing out "hello" can not only output the string hello directly with the printf function, but also use the putchar-to-character output.

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