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Compare two strings
#include <string.h>
int strcmp( const char* s1,
const char* s2 );
- s1, s2
- The strings that you want to compare.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The strcmp() function compares
the string pointed to by s1 to the string pointed to by
s2.
- < 0
- s1 is less than s2.
- 0
- s1 is equal to s2.
- > 0
- s1 is greater than s2.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main( void )
{
printf( "%d\n", strcmp( "abcdef", "abcdef" ) );
printf( "%d\n", strcmp( "abcdef", "abc" ) );
printf( "%d\n", strcmp( "abc", "abcdef" ) );
printf( "%d\n", strcmp( "abcdef", "mnopqr" ) );
printf( "%d\n", strcmp( "mnopqr", "abcdef" ) );
return EXIT_SUCCESS;
}
produces the output:
0
1
-1
-1
1
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
No |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
strcasecmp(),
strcmpi(),
strcoll(),
stricmp(),
strncasecmp(),
strncmp(),
strnicmp(),
wcscmp(),
wcscoll(),
wcsncmp()
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