C++ coding issues

Question

Could someone tell me why the result is always 0%, no matter what numbers I give??
#include <iostream>
using namespace std;
int main()
{
unsigned int a,b;
float c;
cout << "Give the number of people"<< endl ;
cin >> a;
cout << "Give the number of students"<<endl;
cin >> b;
c=(b/a)*100;
cout << "The percentage of students among the public is: " << c << "%";
}

Answer 1

c=b*100/a;
Division in C++ always is a integer so in the order you coding, always is / by a number bigger than up so naturally result is 0.something and that division result is a integer so then 0

Answer 2

u should make either a or b into a double or float before dividing them

Answer 3

https://code.sololearn.com/c1D6CKzDh0dm/?ref=app

Answer 4

If b<a and a, b are integers then b/a would always be 0. The efficient way to solve this is not to use floats, but rather replace
c = (b/a) *100;
with
c = b*100/a;
This way you multiply first, then divide (assuming you won't overflow)
Even more, if you want your answer to be more correct, use:
c = (b*100+50)/a;
Because otherwise if your answer would have been 12.99% with floats, you would still get 12% with integers. By adding 50 above, you round your result to the nearest 1%

Answer 5

that's wrong division doesn't always result in division but division btw integers is always integer try type casting or make a and b float.

Answer 6

Thanks guys. Actually I forgot that in C++, division is always returning an integer value. So, here is always 0.