#include <locale.h>
#include <stddef.h>
#include <stdio.h>
#include <curses.h>

int main() {
    setlocale(LC_ALL, "");
    initscr();

    wchar_t *a = L"a";
    wchar_t *c = L"c";
    wchar_t *cmod = L"\u0301";
    cchar_t aa;
    cchar_t cc;
    cchar_t ccmod;
    setcchar(&aa, a, 0, 0, NULL);
    setcchar(&cc, c, 0, 0, NULL);
    setcchar(&ccmod, cmod, 0, 0, NULL);

    move(0, 0); add_wch(&aa);
    move(0, 1); add_wch(&cc);
    move(0, 2); add_wch(&cc);
    move(0, 2); add_wch(&ccmod);
    move(0, 3); add_wch(&cc);

    refresh();
    getchar();
    endwin();
}