## Convert a Decimal to Octal in C++

```#include <iostream>
#include<cmath>
using namespace std;

void DecToOct(int decnum){

int digits=1;
int howbig=1;

// check to see how many digits
while(1){
if((8*howbig)>decnum){
break;
}else{
howbig*=8;
digits++;
}
}

// using binary to get octal
for(int i=digits;i>0;i--)
cout<<((decnum>>((i-1)*3))&7);
}

void DecToQuat(int decnum){
int digits=1;
int howbig=1;

// check to see how many digits
while(1){
if((4*howbig)>decnum){
break;
}else{
howbig*=4;
digits++;
}
}

// using binary to get quat
for(int i=digits;i>0;i--)
cout<<((decnum>>((i-1)*2))&3);
}

int main(){

int decimalnum;

cout<<"Enter the decimal to be converted:";
cin>>decimalnum;
DecToOct(decimalnum);
cout<<endl;
DecToQuat(decimalnum);

system("pause");
return 0;
}```
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