From Forum Nokia Wiki

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <wchar.h>
#include <e32base.h>
 
#define SIZE 10
_LIT(KData,"FNWiki");
 
int main (void)
{
    TBuf16<SIZE> buf(KData);
    char CArray[SIZE];
    size_t ret;
 
    ret = wcstombs(CArray, (const wchar_t *)buf.PtrZ(), SIZE );
    printf("TBuf16 converted to a char buffer: %s\n",CArray);
    getchar();
    return (1);
}

Here, bwcstombs API is used to convert TBuf16 buffer to a char buffer.

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