need help with some problems, please help

[oj87ko23]

Having trouble with these 3 problems, one problem is figuring out what the output is

1.

    int x =5, y;
   while (x >= 2) {
    y=1;
    while (y <= x) {
    printf ( “ * “ );
     y++; }
     x--;
    printf ( “\n” );   }

after going through it, I think it outputs
*****
****
***
**
*

2. Trying to write a function for this main program

void  xyz  ( int [ ], int ); 
int   main ( ) {
int A [10 ] = {1,2,  . . . ., 10}; int n; \\ n refers to 10 elements.
xyz ( A, n ); 
return 0;  }

Here is what i got

void xyz(inta[], int n){
int total=0;
int i;
for (i=0;i< n; i++){
total = a[i]
}
}

3. write main program for function

int	xyz ( int x, int y, int y ) {
int a, b;
a = x + y + z:
b = a/3;
return b; }

here is what I've written

int xyz (int x int y int z)
int x y z;
int main()
{
printf("enter values for x y z");
scanf("%d %d %d", &x, &y, &z);

not sure what to do after this.

[oj87ko23]

figured out number one
*****
****
***
**

still having trouble with other two

[oj87ko23]

for number four would i add at the end?
total=total+x+y+z;
count=count+1;

of course declaring total and count in the beginning.