ATOF
Section: C Library Functions (3)
Updated: August 1, 1992
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NAME
atof, atoi, atol - convert strings to numbers
SYNOPSIS
#include <stdlib.h>
double atof(const char *nptr);
int atoi(const char *nptr);
long atol(const char *nptr);
DESCRIPTION
These functions convert a string pointed to by
nptr
to floating, integer, and long integer representation respectively.
The first unrecognized character ends the string.
Atof
recognizes an optional string of spaces, then an optional sign, then
a string of digits optionally containing a decimal
point, then an optional `e' or `E' followed by an optionally signed integer.
Atoi
and
atol
recognize an optional string of spaces, then an optional sign, then a
string of
digits.
RETURN VALUE
Atof ,
atoi ,
and
atol
return the converted value.
BUGS
There are no provisions for overflow.
SEE ALSO
scanf(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- BUGS
-
- SEE ALSO
-
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