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ATOL(3) Library Functions Manual ATOL(3)

atolconvert ASCII string to long integer

#include <stdlib.h>

atol(const char *nptr);

The () function converts the initial portion of the string pointed to by nptr to long integer representation.

It is equivalent to:

strtol(nptr, (char **)NULL, 10);

atof(3), atoi(3), atoll(3), strtod(3), strtol(3), strtoul(3)

The atol() function conforms to ISO/IEC 9899:1999 (“ISO C99”).

September 11, 2022 OpenBSD-current