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for (;(c=getchar())!='\n';) 是怎么实现效果的?
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An assignment in C++ will also yield the value being assigned. So c= getchar() is reading the next character from the file, and (c= getchar()) != '\n' is comparing that read character to the newline character. There's another test for the special EOF value, to make sure it doesn't keep trying to read once you reach the end of the file. There's no statement between the while and the closing ...
The getchar function is part of standard input/output utilities included in the C library. There are multiple functions for character input/output operations like fgetc, getc, fputc or putchar. fgetc and getc basically have equivalent features; they take file stream pointer to read a character and return it as an unsigned char cast to an int type.
More Recommendation Counting characters Enter a line of characters, and count the number of English letters, spaces, numbers and other characters. On the code: char c; while ( (c=getchar ())!='\n') This is a judgment condition often used for continuous input of characters, it is best to remember...
C getchar is a standard library function that takes a single input character from standard input. The major difference between getchar and getc is that getc can take input from any no of input streams but getchar can take input from a single standard input stream.
As C developers, being able to reliably accept input from users is critical for creating usable programs. The getchar() function provides us with a nimble tool for basic character input handling in C. When utilized properly, getchar () allows us to take keyboard input from the user easily as we build out our applications.
To properly use the getchar function in C language, you need to pay attention to the following points: Include header file: The header file needs to be included before using the getchar function.
The getchar() function in C is a standard library function that reads a single character from the standard input (stdin).
getchar function in C repeatedly read single character from input and place them in character string. learn how getchar function works and how to use it with c strings in detail.
Understand getchar () in C programming with detailed examples. Learn its usage, syntax, and applications for reading characters efficiently in C.
getchar(); // will consume '\n' } The thing with getchar() is that it returns next character available in the keyboard buffer. So, if you do a c = getchar() and user does: E'\n' (meaning he/she presses character E followed by ENTER) c will hold value 'E' and the next call to getchar() will consume the ENTER ('\n') pressed by user.