The wmemcmp() function in C/C++ compare two wide characters. This function compares the first num wide characters of two wide characters pointed by str1 and str2, returns zero if both the strings are equal or different value from zero if they are not.
int wmemcmp (const wchar_t* str1, const wchar_t* str2, size_t num);
- str1: specifies the pointer to the first string.
- str2: specifies the pointer to the second string.
- num: specifies the number of character to be compared.
Return value: This function returns three different values which defines the relationship between two strings:
- Zero: when both strings are equal.
- Positive value: when the first wide character that does not match in both strings has a greater frequency in str1 than in str2.
- Negative value: when first wide character that does not match in both strings has less frequency in str1 than in str2
Below programs illustrate the above function:
wmemcmp comparison: equal
wcsncmp comparison: equal wmemcmp comparison: not equal
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