Decimal to octal challenge

#1

i am not able t form the code for this problem.pls tell

#2

Hey @yutikakhanna
The code for decimal to octal conversion is as follows:

#include
using namespace std;

void decToOctal(int n) 
{ 
// array to store octal number 
int octalNum[100]; 
  
// counter for octal array 
int i = 0; 
while (n > 0) { 
  
    // storing remainder in octal array 
    octalNum[i] = n % 8; 
    n = n / 8; 
    i++; 
} 
  
// printing binary array in reverse order 
for (int j = i - 1; j >= 0; j--) 
    cout << octalNum[j]; 
} 
  
// Driver program to test above function 
int main() 
{ 
int n;

cin >> n
decToOctal(n);
return 0;
}