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# Program to convert a decimal number into binary, octal and pental code

Posted By: Easy Tutor     Category: C++ Programming     Views: 38647

## Code for Program to convert a decimal number into binary, octal and pental code in C++ Programming

``` #include<iostream.h>
#include<conio.h>
#include<stdio.h>

long binary_code(int);
double pental_code(int);
double octal_code(int);

main()
{

clrscr();

int number;

cout<<"\n ********** Decimal Number *********"<<endl;
cout<<"\n For binary numbers ,enter from( 0 ---> 1023 ) "<<endl;

cout<<"\n\n Enter the Decimal number = ";
cin>>number;

cout<<"\n ********** Binary Number **********"<<endl;
cout<<"\t Binary Number = "<<binary_code(number)<<endl;

cout<<"\n *********** Pental Code ***********"<<endl;
cout<<"\t Pental Code = "<<pental_code(number)<<endl;

cout<<"\n *********** Octal Code ************"<<endl;
cout<<"\t Octal Code = "<<octal_code(number)<<endl;

getch();
return 0;
}

/*************************************************************************//*************************************************************************///------------------------  Function Definitions  -----------------------///*************************************************************************//*************************************************************************//*************************************************************************///---------------------------  binary_code(int)  ------------------------///*************************************************************************/long binary_code(int number)
{
int count=0;
int resulting_array[25];
int remainder;
int qutiont;
int size=0;

long binary_number=0;
long sum=0;
longbase=1;

while(number>0)
{
qutiont=number/2;
remainder=number%2;
number=qutiont;
resulting_array[count]=remainder;

size++;
count++;
}

for(int j=0;j<size;j++)
{
sum=resulting_array[j]*base;
base=base*10;
binary_number+=sum;
}

return binary_number;
}

/*************************************************************************///---------------------------  pental_code(int)  ------------------------///*************************************************************************/double pental_code(int number)
{
int count=0;
int resulting_array[25];
int remainder;
int qutiont;
int size=0;

double pental_number=0;
double sum=0;
doublebase=1;

while(number>0)
{
qutiont=number/5;
remainder=number%5;
number=qutiont;
resulting_array[count]=remainder;

size++;
count++;
}

for(int j=0;j<size;j++)
{
sum=resulting_array[j]*base;
base=base*10;
pental_number+=sum;
}
return pental_number;
}

/*************************************************************************///----------------------------  octal_code(int)  ------------------------///*************************************************************************/double octal_code(int number)
{
int count=0;
int resulting_array[25];
int remainder;
int qutiont;
int size=0;

double octal_number=0;
double sum=0;
doublebase=1;

while(number>0)
{
qutiont=number/8;
remainder=number%8;
number=qutiont;
resulting_array[count]=remainder;

count++;
size++;
}

for(int j=0;j<size;j++)
{
sum=resulting_array[j]*base;
base=base*10;
octal_number+=sum;
}
return octal_number;
}
```
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