Conversion from Decimal To OCTAL Using C Program

#include
int main(){
int i=0,j=0,rem=0,a[10],b[10];
long int num;
printf("\nEnter a number :");
scanf("%ld",&num);
while(num){
if(num<8){ a[j++]=num; break; } else{ a[j++]=num%8; num=num/8; } } for(i=j-1;i>=0;i--)
b[rem++]=a[i];
printf("\nOctal equivalent :");
for(j=0;j printf("%d",b[j]);
return 0;
}