how to use call by address or call by value to replace return function？

Question

float cal(float x,int n){
int i;
float ans=1;for(i=1;i<=n;i++){
ans=ans*x;
}return ans;}

Answer 1

你可以用 ref

static void calRef(ref float x, int n)
{
int i;
float ans=1;
for(i=1;i<=n;i++) {
ans=ans*x;
}
x = ans;
}

https://code.sololearn.com/cTE03WmWHHNi/?ref=app