getchar
From cppreference.com
Defined in header <stdio.h> | ||
int getchar(void); | ||
Reads the next character from stdin.
Contents |
[edit]Parameters
(none)
[edit]Return value
The obtained character on success or EOF on failure.
If the failure has been caused by end-of-file condition, additionally sets the eof indicator (see feof()) on stdin. If the failure has been caused by some other error, sets the error indicator (see ferror()) on stdin.
[edit]Example
Demonstrates getchar with error checking
Run this code
#include <stdio.h>#include <stdlib.h> int main(void){for(int ch;(ch = getchar())!=EOF;)// read/print "abcde" from stdinprintf("%c", ch); // Test reason for reaching EOF.if(feof(stdin))// if failure caused by end-of-file conditionputs("End of file reached");elseif(ferror(stdin))// if failure caused by some other error{perror("getchar()");fprintf(stderr, "getchar() failed in file %s at line # %d\n", __FILE__, __LINE__ -9);exit(EXIT_FAILURE);} returnEXIT_SUCCESS;}
Possible output:
abcde End of file reached
[edit]References
- C23 standard (ISO/IEC 9899:2024):
- 7.21.7.6 The getchar function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.21.7.6 The getchar function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.21.7.6 The getchar function (p: 332)
- C99 standard (ISO/IEC 9899:1999):
- 7.19.7.6 The getchar function (p: 298)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.7.6 The getchar function
[edit]See also
| gets a character from a file stream (function) | |
C++ documentation for getchar | |
