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Almost all UNIX operating systems have voluminous documentation known as manual pages. Every page is a document. If one wants to read a page then the command man at a shell prompt will show the manual, for example, "man ftp". Pages are referred by using the notation "name(manual-section)", for example time(1).

Man Page :: Unix Man Pages - atof

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NAME

atof - convert a string to a double

SYNOPSIS


#include <stdlib.h> 

double atof(const char * nptr );

DESCRIPTION

The atof () function converts the initial portion of the string pointed to by nptr to double . The behavior is the same as

strtod(nptr, (char **) NULL);

except that atof () does not detect errors.

RETURN VALUE

The converted value.

CONFORMING TO

SVr4, POSIX.1-2001, 4.3BSD, C89, C99.