Struggling with pointers and DMA

Question

Hey (again), I’m trying to complete the 36 end of module project for c++, and could someone please explain to me how to insert pointers and why my code doesn’t work?

#include <iostream>
using namespace std;

int main() {
int ages[5];

for (int i = 0; i < 5; ++i)
{
cin >> ages[i];
}

int min = ages[0];
for(int i = 0; i < 5; i++)
{
if(ages[i] < min)
min = ages[i];
}
float percentage = min;
float discount = 50/100 * percentage;
float sum = 50 - discount;

cout << sum;
return 0;
}

Answer 1

Dividing an integer by another integer in C++ will yield an integer as well, i.e. the decimal part is truncated. Therefore:

50 / 100 = 0

If you expect a decimal result, at least one operand has to be a floating point type, e.g.

50.0 / 100 = 0.5
50 / 100.0 = 0.5
50.0 / 100.0 = 0.5

Everything else should be fine. Why are you worrying about inserting pointers?

Answer 2

cheers! i had been stuck on this for quite a while and i assumed that i needed to use pointers and DMA to solve it as it was the last few topics before the project