Need help with pointer question!!

Jaysurya (1)
Write a function that reverses the values of an array of floating-point data:
void reverse(double* a, int size)
In the function, use two pointer variables, not integer indexes, to traverse the array
elements.
oonej (208)
start with this...
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float *ptr1;
float *ptr2;

ptr1 = a[0];
ptr2 = a[size - 1];

for(int i = 0; i < (size-1)/2; i++){
{
temp = ptr1;
ptr1 = ptr2;
ptr2 = temp;
ptr1++;
ptr2--;
}


something like that... not sure if its close but something along those lines
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