Format
#include <string.h>
int strcmpi(const char *string1, const char *string2);
Language Level: Extension
Threadsafe: Yes.
Locale Sensitive: The behavior of this function might be affected by the LC_CTYPE category of the current locale. For more information, see Understanding CCSIDs and Locales.
Description
strcmpi compares string1 and string2 without sensitivity to case. All alphabetic characters in the two arguments string1 and string2 are converted to lowercase before the comparison.
The function operates on null-ended strings. The string arguments to the function are expected to contain a null character (\0) marking the end of the string.
Return Value
strcmpi returns a value indicating the relationship between the two strings, as follows:
Value | Meaning |
Less than 0 | string1 less than string2 |
0 | string1 equivalent to string2 |
Greater than 0 | string1 greater than string2 |
Example that uses strcmpi()
This example uses strcmpi to compare two strings.
#include <stdio.h>
#include <string.h>
int main(void)
{
/* Compare two strings without regard to case */
if (0 == strcmpi("hello", "HELLO"))
printf("The strings are equivalent.\n");
else
printf("The strings are not equivalent.\n");
return 0;
}
The output should be:
The strings are equivalent.
Related Information: