can anyone explain this code?

Question

int arr[3]= {2,2,3};
int res =1;
for (int i=0; i<3; i++) {
res*= arr[i];
}
cout<<res;

what are the answer and explain in details. thanks ;)
ps: edited

Answer 1

first of all it has a error

res* arr[i];

is not a correct command,

if you want to multiply all elements then write it as

res *= arr[i]; /* this will give the multiplication
of all elements of that array */

so output will be 1*2*2*3 = 12

/* but if you want to do something else then update your question again with proper commands. */

Answer 2

Line 1 : Declare an integer array.
Line 2 : Declare integer "res" to 1.
Line 3 to 5 : From index 0 to 2, res is multiplied with array element of index i. arr[0] is 2, arr[1] is 2, arr[2] is 3. So, res becomes 2*2*3 = 12.
Line 6 : res = 12 is printed.

But note that the code works if Line 4 is "res *= arr[i]" but not "res * arr[i]".

Answer 3

thx for the answer :)
sorry for the mistake.