Output an error message to stderr.

This function is compatible with the following targets:

ANSI

BeOS

EMB/RTOS

Mac OS

Palm OS

Win32

#include <stdio.h>

void perror(const char *s);

Parameters for this facility are:

s

const char *

Prints an errno and message

If s is not NULL or a pointer to a null string the perror() function outputs to stderr the character array pointed to by s followed by a colon and a space ': '. Then, the error message that would be returned by strerror() for the current value of the global variable errno.

"abort"

"errno"

#include <errno.h>
#include <stdio.h>

int main()
{
	perror("No error reported as");
	errno = EDOM;
	perror("Domain error reported as");
	errno = ERANGE;
	perror("Range error reported as");
	
	return 0;
}
Output
No error reported as: No Error
Domain error reported as: Domain Error
Range error reported as: Range Error





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Last updated: August 16, 2000