strncmp()
QNX SDP8.0C Library ReferenceAPIDeveloper
Compare two strings, up to a given length
Synopsis:
#include <string.h>
int strncmp( const char* s1,
const char* s2,
size_t n );
Arguments:
- s1, s2
- The strings that you want to compare.
- n
- The maximum number of characters that you want to compare.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The strncmp() function compares up to n characters from the strings pointed to by s1 and s2.
Returns:
- < 0
- s1 is less than s2.
- 0
- s1 is equal to s2.
- > 0
- s1 is greater than s2.
Examples:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main( void )
{
printf( "%d\n", strncmp( "abcdef", "abcDEF", 10 ) );
printf( "%d\n", strncmp( "abcdef", "abcDEF", 6 ) );
printf( "%d\n", strncmp( "abcdef", "abcDEF", 3 ) );
printf( "%d\n", strncmp( "abcdef", "abcDEF", 0 ) );
return EXIT_SUCCESS;
}
produces the output:
1
1
0
0
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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