Question

How to find the offset of first non-matching wide character in C

Answer 1

#include <stdio.h>
#include <wchar.h>
 
int main(void)
{
    wchar_t* string = L"abbcccoulomb";
    wchar_t* source = L"abc";
 
    int index = wcsspn(string, L"abc");
  
    printf("The first %d characters of: %ls found in: %ls\n", index, string, source);
}


 
/*
run:
 
The first 6 characters of: abbcccoulomb found in: abc

*/

 

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