strncmp()
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 |
Interrupt handler | Yes |
Signal handler | Yes |
Thread | Yes |