CODEWITHSUNDEEP
arrayscwchar-t
wevrqwevrq2
wevrqwevrq2

Reputation: 63

convert wchar_t array into int array in C

I'm trying to convert a wchar_t array into an int array which contains the encoding of each wchar_t element in C. I know I can do this by a loop like the code below, is there any other way without using a loop which can greatly improve performance?

 for(int i=0; i< filesize; i++){
    t[i] = (int)p[i];   //t is an int array, p is a wchar_t array
}

Upvotes: 1

Views: 204

Answers (2)

mediocrevegetable1
mediocrevegetable1

Reputation: 4217

Assuming wchar_t and int have the same size, memcpy is probably what you want.

#include <string.h>
#include <wchar.h>

int main(void)
{
    _Static_assert(sizeof (int) == sizeof (wchar_t), "This won't work");
    wchar_t warr[3] = {L'a', L'b', L'c'};
    int iarr[3] = {0};
    memcpy(iarr, warr, sizeof warr);
    // iarr now holds the same contents as warr
}

Upvotes: 1

user15801843
user15801843

Reputation:

No. In that case there is no real alternative (at least if you have portability in mind). Otherwise mediocrevegetable1 is a possible solution.

Upvotes: 2

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