#includestdio.h
#includeconio.h
int main() {
int j,num;
printf("Please enter a number :");
scanf("%d",&num);
while(num0)
{
j=num%10;
if( j!=0 && j!=1 )
{
printf("num is not binary");
break;
}
num=num/10;
if(num==0)
{
printf("num is binary");
}
} getch();
}
