while getchar n

The most common operation associated with buffer cache is the input and output operations of characters Getchar,getc,getch,getche,gets series functions. The first example (relating to GetChar): Copy Code code as follows: #include int main () { int ch; Ch=getchar (); Ch=getchar (); printf ("%d\

For classic masters, you must read and understand them carefully. I used to check the C programming language (secondedition) of K R) The character input/output in section 1.5 is confused by getchar () and EOF. The reason may be that the working principle and EOF usage of getchar () are not clear. Therefore, it is necessary to sum up. Otherwise, many trivial knowledge points will be forgotten after a long t

For classic masters, you must read and understand them carefully. I used to check the C programming language (secondedition) of K R)The character input/output in section 1.5 is confused by getchar () and EOF. The reason may be that the working principle and EOF usage of getchar () are not clear. Therefore, it is necessary to sum up. Otherwise, many trivial knowledge points will be forgotten after a long ti

Transferred from: http://www.jb51.net/article/36848.htm Master Classics of the book, to carve to read, to understand. Used to look at Kr's the C Programming Language (Secondedition)The character input/output of section 1.5 is confused by GetChar () and EOF. Probably largely due to the lack of clarity on how GetChar () works and the use of EOF. Therefore, it is necessary to summarize the feeling, otherwise,

Master-Class classics, to read and understand carefully. I used to look at Kr's the C Programming Language (Secondedition)The character input/output of section 1.5 is confused by GetChar () and EOF. It may be largely due to the lack of clarity about the workings of GetChar () and the use of EOF. Therefore, the feeling is necessary to sum up, otherwise, a lot of trivial knowledge points will be forgotten aft

The first thing we recommend is to use the gets function less. I encountered this problem is a C language novice more likely to encounter a problem. It's about get () and GetChar () two functions. As we all know, the gets () function is an input string, and GetChar () is a single character. But in a small program, I found two of them in some other usage. because the code for the source file is very long, i

Label: style blog color Io use AR file data Div Getchar () 1 . Reading a character from the buffer zone is equivalent to clearing the buffer zone. 2 . The first scanf () will leave a character in the buffer when reading the input. ' \ N ' (After entering the value of S [I], press the Enter key.) So if you do not add a getchar () here to remove the carriage return, gets () instead of waiting for a chara

Scanf, gets, getchar, cin, cin. get, cin. getline, getline summary, cin. getcin. getline I. scanf Scanf can be used to read numbers, characters, and strings; Conclusion:(1) When scanf reads a single character (% c) from the buffer, if the first character in the buffer is a space, tab, or line feed separator, scanfNoIgnore it and read and clear the characters in the buffer zone.(2) When scanf reads a number or string (not a single character) from the b

(1) getch () and getche () FunctionsBoth functions read one character from the keyboard. The call format is:Getch ()Getche ()The difference between the two is that the getch () function does not display the characters read back on the display screen while getche ()The function returns the characters read to the display screen.Example 1:# Include Main (){Char c CHC = getch ()/read a character from the keyboard and do not return it to the character variable C/Putchar (C)/output this character/Ch =

Let's talk about the basic differences. (1) getch () and getche () FunctionsBoth functions read one character from the keyboard. The call format is:Getch ();Getche ();The difference between the two is that the getch () function does not display the characters read back on the display screen, while the getche () function does ()The function returns the characters read to the display screen.Example 1:# Include Main (){Char C, ch;C = getch ();/* read a character from the keyboard and do not return

Master Classics of the book, to carve to read, to understand. I used to look at the character input/output of section 1.5 of the C programming Language (Second Edition) in Kr, confusing the behavior of GetChar () and EOF. Therefore, it is necessary to summarize the feeling, otherwise, a lot of trivial knowledge points after a long time will be forgotten, only write down is the best way.First, the two points of the

This article is based on: http://www.cnblogs.com/qlinux/articles/2465329.html. For classic masters, you must read and understand them carefully. The character input/output in section 1.5 of K R's C programming language (second edition) is confusing with getchar () and EOF. Therefore, it is necessary to sum up. Otherwise, many trivial knowledge points will be forgotten after a long time. Only writing down is the best method. I. Summary of

EOF EOF (end of file) is a status returned by the file read operation. It is not a value read from the file, instead, it is a return value when the file reading function reads the end Of the file or cannot read down. The returned value is generally-1, which is also the value defined for the EOF macro in most systems. Because of this special return value, the return values of functions such as getch () and getchar () are int rather than char, which wil

GetChar () putchar (CH) scanf () header file stdio.hGetch () Getche () header file conio.hGets () puts () header file Stdio.h both the Getch () and the Getche () functions read a character from the keyboard, However, the getch () function does not echo the read-in character on the display screen, and the Getche () function echo the read-in Word to the display screen. The difference between the GetChar