Challanges : decimal to octal

#1

#include
using namespace std;
int main() {
int n;
cin >> n;

string octal = "";
while(n!=0){
    int r = n%8;
    n/=8;
    char c = r+'0';
    octal = c+octal;
}
cout << octal <<endl;

}
sir, please explain me this program, line by line in detail… i am not able to get it… we are not taught about arrays or strings yet, but in this challenge they are used… also why did we took octal in strings and then char c, why not in integer form… please explain me this program in detail

#2

hey @Sheenagoyal21, below pic is procedure to convert octal to decimal

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WhatsApp%20Image%202019-07-26864×1152 54 KB

remainder that we get after this divison concatenated to string in the direction of arrow.

#3

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