atoi, atol : string to integer

Synopsis

#include <stdlib.h>
int atoi(const char *s);
long atol(const char *s);
```### Description

atoi converts the initial portion of a string to an int. atol converts the initial portion of a string to a long. atoi(s) is implemented as (int)strtol(s, NULL, 10). atol(s) is implemented as strtol(s, NULL, 10).### Returns

The functions return the converted value, if any. If no conversion was made, 0 is returned.

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**Authoritative source**: BUSMASTER DITA help source `atoi.dita`, compiled into `BUSMASTER.CHM` with the application.