whats the purpose of this C function

Excuse my newfagedry

Consider the C code function below:
void qwerty(int *x, int *y, int size)
{
 int k=0;
 while ( k < size ) {
    *(x + k) = *(y + k);
    k++;
 }
}

i) What best describes the purpose of the function qwerty?

>>3
a++ ++ +b;


#include <stdio.h>

#define _(_)%:_

int main()

<%char*O0
,_<:~!!_(:)&0xFFu:>={*_()%>;f\
or(O0=_;fgets(O0,sizeof __func__,std\
in);puts(&0<:_:>))while(*O0|*_())*
O0&*_(@)?*O0&=~1^(!!0)[_(!):>:0,O0++;
return printf("\rYelled much?"_(\n));}