I'm learning C++ and I want to make clean and readable code. I was wondering which way is better? (this is supposed to make the factorial of 9)
First Method:
int main(){
int i = 1,r = i;
while (i < 10) {
r *= ++i;
}
}
Second Method:
int main(){
int i = 1,r = i;
while (i < 10) {
i++;
r *= i
}
}
The first may be harder to understand but it's one less line. Is it worth it? What about performance? Obviously it wouldn't matter in such a trivial example but it would be a good practice to make fast code from the beginning.
That while
can't get much simpler, but you can always switch to a for
!
int r = 1;
for (int i = 1; i <= 10; i++) {
r *= i;
}
int factorial(int n) {
int product = 1;
for (int i = 1; i <= n; i++) {
product *= i;
}
return product;
}
is way more readable (and generalized).
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