Convert octal number to binary number

Convert octal number to binary number

/*WAP to convert octal to binary*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

int oct,dec=0,d,t=0,bin=0,r=1;

clrscr();

printf("enter the octal number:");

scanf("%d",&oct);

while(oct!=0)

{

d=oct%10;

dec=dec+d*pow(8,t);

t++;

oct=oct/10;

}

while(dec!=0)

{

d=dec%2;

bin=bin+(d*r);

r=r*10;

dec=dec/2;

}

printf("the binary number is %d",bin);

getch();

}

OUTPUT:

enter the octal number:12

the binary number is 1010