Variable-length parameters in C language are rarely used in self-designed interfaces during development. However, printf is the most commonly used parameter interface, while feeling the strong charm of printf, do you want to figure out how printf is
Format of the C language input/output functions printf and scanf, format rules such as % 5.4f and other similar issues The turbo c2.0 Standard Library provides two consoles for formatting Input and Output Functions: printf () and scanf (),
These
Common Linux C functions-memory and string operations-general Linux technology-Linux programming and kernel information. For more information, see the following. Bcmp (memory content comparison)
Related functions: bcmp, strcasecmp, strcmp, strcoll,
From: http://baike.baidu.com/view/1427555.htm
Although the C language has been used for many years, it is still necessary to read books frequently to remember some subtle things. After searching for a few minutes on Uncle Google, I couldn't find
#include #include int main(){ int i; i = 10; printf("i : %d\n",i); printf("sizeof(i++) is: %d\n",sizeof(++i)); printf("i : %d\n",i); return 0;}
Result:
I: 10
Sizeof (I ++) is: 4I: 10
Sizeof is an operator, but does not calculate
There are some mistakes in it, watch it.
1.va_start () va_end () function application (http://www.daydreaming.com.cn/article/2007-5-31/1838-1.htm)
1: When you cannot list the type and number of all arguments for the pass-through function , you can
Directory of this document
First, the printf function
Second, scanf function
Description: This C language topic is the prelude to learning iOS development. And for programmers with an object-oriented language development experience,
This article mainly introduces common php string output methods, and analyzes the specific usage and usage of echo, print, printf, and sprintf output strings in the form of examples, for more information about php string output, see the following
Here's a description.
1. Echo
echo is a keyword in PHP that has no return value. In the notation, it can omit parentheses. The following code:
Copy the Code code as follows:
Echo ' Test String ';Echo (' Test String ');
2. Print
Print is also a
Both Echo and printf in the shell can be used as output, and printf is an enhanced version of EchoShow escape charactersecho \ "Abcdef\" ">>> "ABCdef"Show variablesAge=23echo "My Age is $age">>>my name is 23In the process of use, in order to avoid
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.