Problem : https://www.hackerrank.com/challenges/prettyprint/problem
Solution :
#include <iostream>
#include <iomanip>
using namespace std;
int main() {
int T; cin >> T;
cout << setiosflags(ios::uppercase);
cout << setw(0xf) << internal;
while(T--) {
double A; cin >> A;
double B; cin >> B;
double C; cin >> C;
/* Enter your code here */
long long int D = (long)A;
cout<<hex<<showbase<<left<<nouppercase<<D<<endl;
cout<<fixed<<dec<<setw(15)<<setprecision(2)<<showpos<<right<<setfill('_');
cout<<B<<endl;
cout<<setprecision(9)<<dec<<left<<noshowpos<<uppercase<<scientific;
cout<<C<<endl;
}