C Program dec to oct

How to write a C Program Decimal to Octal Number,  ?

Solution:

#include <stdio.h>
#include <stdlib.h>

int dodaj()
{
    unsigned short int n;
    printf("Podaj liczbe: ");
    while(scanf("%hu", &n)!=1 || n<=0){
    printf("Blad danych!");
        while(getchar()!='\n');
    }
    return n;
}
int zamiana(unsigned short int n, int tab[31])
{
    int i=0,j;
    while(n>0){
    tab[i++]=n%8;
    n/=8;
    }
    j=i-1;
    return j;
}
void wyswietl(int tab[31], int j)
{
    for(j;j>=0;j--){
        printf("%d", tab[j]);
    }
}
int main()
{
    unsigned short int n;
    int j;
    int tab[31];
    n=dodaj();
    j=zamiana(n, tab);
    wyswietl(tab,j);
    return 0;
}

C Program to Convert a Decimal number to Octal Number

How to write a C Program to Convert a Decimal number to Octal Number in C Programming Language ?

Solution:

1. #include <stdio.h>
2. #include <conio.h>
3. void main()
4. {
5.  int a,no[100],i,c,n=0;
6.  clrscr();
7.  printf("\nEnter Decimal Number: ");
8.  scanf("%d",&a);
9.  for(i=0;a!=0;++i)
10.  {
11.   c=a%8;
12.   no[i]=c;
13.   a=a/8;
14.   ++n;
15.  }
16.  printf("\nThe Octal equivalant of decimal number is: ");
17.  for(i=n-1;i>=0;--i)
18.  {
19.   printf("%d",no[i]);
20.  }
21.  getch();
22. }