atol(), atoll()
QNX SDP8.0C Library ReferenceAPIDeveloper
Convert a string into a long integer
Synopsis:
#include <stdlib.h>
long atol( const char* ptr );
long long atoll( const char* ptr );
Arguments:
- ptr
- A pointer to the string to parse.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The atol() function converts the string pointed to by ptr to a long integer; atoll() converts the string pointed to by nptr to a long long integer.
Returns:
- atol()
- A long integer.
- atoll()
- A long long integer.
Examples:
#include <stdlib.h>
#include <stdio.h>
int main( void )
{
long x;
x = atol( "-289" );
printf( "x = %d\n", x );
return EXIT_SUCCESS;
}
produces the output:
x = -289
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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