Error Codes Associated with errorno in C++
There are lots of codes associated with errorno in C++ but some of the commonly used error codes are listed in the below table:
|
errorno Code |
Associated Macro |
Description |
|---|---|---|
| 1 | EPERM | Operation not permitted |
| 2 | ENOENT | No such file or directory |
| 3 | ESRCH | No such process |
| 5 | EIO | I/O error |
| 7 | E2BIG | Argument list too long |
| 9 | EBADF | Bad file number |
| 10 | ECHILD | No child processes |
| 11 | EAGAIN | Try again |
| 12 | ENOMEM | Out of memory |
| 13 | EACCES | Permission denied |
How to use errno in C++?
In C++ errno is a preprocessor macro that is used for error indication and reporting errors that occur during a function call. It contains error codes so if a call to a function fails somehow then the errno is set to a value that corresponds to the error.
errno is defined in the header file <cerrno> in C++.
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