Write a program to demonstrate the use of scanf function.

Though I've already explained about 'scanf' function in my previous examples. I would like to add some of point here. The first executable statement is of-course the 'printf' function. Which is also know as 'prompt message'. Some compilers permit the use of the 'prompt message' as a part of control string in scanf, like

scanf("Enter a number %d", &number);

#include <stdio.h>
main()
{
   int number;
   printf("Enter an integer number\n");
   scanf("%d", &number);
   if( number <>
   printf("Your number is smaller then 100\n");
   else
   printf("Your number contains more than two digits\n");
}

Output:

Enter an integer number
54
Your number is smaller than 100

Enter an integer number
108
Your number contains more than two digits