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atoi
The Single UNIX ® Specification, Version 2
Copyright © 1997 The Open Group
NAME
atoi - convert a string to integer
SYNOPSIS
#include <stdlib.h> int atoi(const char *str);
DESCRIPTION
The call atoi(str) is equivalent to:
(int) strtol(str, (char **)NULL, 10)
except that the handling of errors may differ. If the value cannot be represented, the behaviour is undefined.
RETURN VALUE
The atoi() function returns the converted value if the value can be represented.
ERRORS
No errors are defined.
EXAMPLES
None.
APPLICATION USAGE
The atoi() function is subsumed by strtol() but is retained because it is used extensively in existing code. If the number is not known to be in range, atoi() is not required to perform any error checking.
FUTURE DIRECTIONS
None.
SEE ALSO
strtol(), <stdlib.h>.
DERIVATION
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