getchar
| Defined in header <stdio.h>
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| int getchar(void); |
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Reads the next character from stdin.
Parameters
(none)
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.
Example
getchar with error checking
Run this code
#include <stdio.h> #include <stdlib.h> int main(void) { int ch; while ((ch=getchar()) != EOF) /* read/print "abcde" from stdin */ printf("%c", ch); /* Test reason for reaching EOF. */ if (feof(stdin)) /* if failure caused by end-of-file condition */ puts("End of file reached"); else if (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); } return EXIT_SUCCESS; }
Output:
abcde End of file reached
References
- 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
See also
| gets a character from a file stream (function) |