stricmp()

Compare two strings, ignoring case

Synopsis:

#include <string.h>

int stricmp( const char* s1, 
             const char* s2 );

Arguments:

s1, s2: The strings 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.

The stricmp() function compares, with case insensitivity, the string pointed to by s1 to the string pointed to by s2. All uppercase characters from s1 and s2 are mapped to lowercase for the purposes of doing the comparison.

Returns:

< 0: s1 is less than s2.
0: s1 is equal to s2.
> 0: s1 is greater than s2.

The memicmp() function returns the difference between the original characters, while stricmp() returns the difference between the lowercase version of the characters. The QNX 4 version of memicmp() also returned the difference between the lowercase version of the characters.

Examples:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main( void )
  {
    printf( "%d\n", stricmp( "AbCDEF", "abcdef" ) );
    printf( "%d\n", stricmp( "abcdef", "ABC"    ) );
    printf( "%d\n", stricmp( "abc",    "ABCdef" ) );
    printf( "%d\n", stricmp( "Abcdef", "mnopqr" ) );
    printf( "%d\n", stricmp( "Mnopqr", "abcdef" ) );

    return EXIT_SUCCESS;
  }

produces the output:

Classification:

QNX 4

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes