c programming printf format specifiers

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

In C language programming, we inevitably need to access variable parameter functions. For C languages that do not support function polymorphism, using variable parameters and macro-defined functions is a good way to implement function polymorphism.

Now, the reader must be eager to write programs to allow actual interaction between the computer and the outside world. We do not want the program to only work as a typist and display fixed information contained in the program code. Indeed, the

In PHP, there are four methods to output strings. The echo structure can output multiple values at a time; print () can only output one value; printf () can format the output; print_r () can output arrays, which is very beneficial for debugging. In

PHP learning output string (echo, print, printf, print_r and var_dump ). The following is a one-to-one introduction. 1. echoecho is a keyword of PHP, and it does not return a value. In terms of writing, it can omit parentheses. The following code:

The following is a one-to-one introduction. 1. echoEcho is a keyword of PHP, and it does not return a value. In terms of writing, it can omit parentheses. The following code: Copy codeThe Code is as follows: echo 'test string '; Echo ('test string '

C language Standardin 1978, Dennis Ritchie (Dennis Ritchie) and Brian Kernighan published the first edition of the "C programming language". The C language standard described in the book is also called "K&r C" by C language programmers, and the

When using functions such as nslog and [nsstring stringwithformat:], they all work based on C/C ++-style string formatting. Originally, C/C ++ has never been used. In iPhone development and development, the NS series objects are added, and the

In practice, the value of some variables is limited to a limited range. For example, there are only seven days in a week, 12 months in a year, and six courses per week in a class. It is obviously inappropriate to describe these values as integer,

Many of the scripts we write can do a good job of manipulating the data, but the output is not formatted appropriately. This is because the basic print statement can do a limited amount of work. Because most of the functionality of awk is to produce