NH> atoi() IS standard and is included in stdlib.
 NH> atoi   is NOT standard and could be anything.
 NH> atoi() is equivalent to:  (int)strtol(s, (char ***)NULL, 10)
 NH> atoi() can easily be replaced by the usage of sprintf() [...]

2s/atoi/itoa/
4s/atoi/itoa/

The statement in line 3 is not completely true (Consider what is defined to
happen to "errno".).  The statement in (the corrected) line 4 is
not completely true (Consider the use of itoa() to generate base 36
strings.).

 ¯ JdeBP ®

--- FleetStreet 1.22 NR