Main.c:2:31: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token
void XoaPhanTu(int arr[], int &n, int index){
^
Main.c: In function ‘main’:
Main.c:39:2: warning: implicit declaration of function ‘XoaPhanTu’ [-Wimplicit-function-declaration]
XoaPhanTu(a,n,vt);
^~~~~~~~~
Main.c:23:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&n);
^~~~~~~~~~~~~~
Main.c:27:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &a[i]);
^~~~~~~~~~~~~~~~~~