Decimal to octal number conversion program in C++

Decimal to octal number conversion program in C++. _{Decimal to octal} _{Decimal Value =115;}

_Integer	_Quotient	_Reminder	_{Reminder in octal}
_115/8	₁₄	₃	₃
_14/8	₁	₆	₆
_1/8	₀	₁	₁

_{Octal value = 163}

Flowchart of Decimal to octal program in C++

C++ Program to convert Decimal to octal number program

#include<iostream>
using namespace std;
int main()
{
	int n,j,ocn=0 ,i=1 ;
	cout<<"Please Enter the decimal number : ";
	cin>>n;
	j=n;
	do
	{
		ocn=ocn+(j%8)*i;
		i=i*10;
		j=j/8;
	}
	while(j!=0);
	cout<<"Decimal is "<<n<<" and  its octal is : "<<ocn;
}

#include<iostream>

using namespace std;

int main()

{

int n,j,ocn=0 ,i=1 ;

cout<<"Please Enter the decimal number : ";

cin>>n;

j=n;

{

ocn=ocn+(j%8)*i;

i=i*10;

j=j/8;

}

while(j!=0);

cout<<"Decimal is "<<n<<" and its octal is : "<<ocn;

}

Output Please Enter the decimal number: 9 Decimal is 9 and its octal is: 11

Excercise

Find the possible mistakes in the following Shamil’s Flow Table of the Program to convert the decimal number to its octal number. if user input decimal as 115 the loop will execute as follows

Loop	What lines will execute?	Actual work to do
1 time j=115	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,	ocn=ocn(j%8)i ocn=0 +(163%8) 1 ocn=0+(3) 1 ocn=3 i=i10 i=1*10 i=10
2 time j=14	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 16, 17	ocn=ocn(j%8) i ocn=3 +(8%14) 10 ocn=3+(6) 10 0cn=63 i=i10 i=10*10 i=100
3 time j=1	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 16, 17	ocn=ocn(j%8) I ocn=63+(1%8) 100 ocn=63+(1) 10 ocn=163 i=i10 i=100*10 i=1000 the octal of 115 is 163

Decimal to octal number conversion program in C++
By: Prof. Dr. Fazal Rehman | Last updated: October 21, 2023

Flowchart of Decimal to octal program in C++

C++ Program to convert Decimal to octal number program

Excercise

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