Hi, Recently while practicing I found this problem, Please run this code in your local machine.

#include <bits/stdc++.h>
using namespace std;
double power(double a, double b) {
    double ans = 1;
    for(int i = 1; i <= b; i++){
        ans *= a;
    }
    return ans;
}

int main()
{
    double anaconda = 0;
    for(int i = 0; i < 25; i++){
        anaconda += power(10,i);
        cout << setprecision(30) << fixed <<i << " "<< anaconda << endl;
    }

}

If you run this code you should see something like this

Your can also see this code running in IDEONE
You can see there from i = 16 , the program is giving wrong output.
There should be all 1s in every number.
Can anyone please tell me

• Why this is giving wrong result even in this small range ?
• And how to avoid this type of calculation problem ?

Thanks in advance ❤️❤️❤️