Thread: isdigit() to validate if input is number..

Hi..
i have a doubt..
i have seen that isdigit() function is used with "character" data type..
but can we use to validate an "integer"...??
i mean is it ok..to write like this..

Code:

int num;
scanf("%d",&num);
if(isdigit(num))
{
  printf("you entered a number..");
}
else
{
  printf("enter only an integer number..");
}

My task is to check the input given by user..whether it is an INTEGER or not..
Kindly help me..
thank you.