#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<math.h>
void main()
{
    int a[20],b[20];
    int i,j,k,c,fra,flag,rem;
    float rem1;
    char s[20];
    c=fra=flag=rem=0;
    rem1=0.0;
    clrscr();
    printf("ENTER THE OCTAL NUMBER : ");
    scanf("%s",s);
    for(i=0,j=0,k=0;i<strlen(s);i++)
    {
        if(s[i]=='.')
        {
            flag=1;
        }
        elseif(flag==0)
            a[j++]=s[i]-48;
        elseif(flag==1)
            b[k++]=s[i]-48;
    }
    c=j;
    fra=k;
    for(j=0,i=c-1;j<c;j++,i--)
    {
        rem = rem +(a[j] * pow(8,i));
    }
    for(k=0,i=1;k<fra;k++,i++)
    {
        rem1 = rem1 +(b[k] / pow(8,i));
    }
    rem1=rem+rem1;
    printf("\nTHE DECIMAL VALUE OF GIVEN OCTAL NO IS : %f",rem1);
    getch();
}
/* OUTPUT
--------------------------------------------------------
ENTER THE OCTAL NUMBER : 103.88

THE DECIMAL VALUE OF GIVEN OCTAL NO IS : 68.125000

*/