To count the number of digits in an integer

Program:

#include<stdio.h>
#include<conio.h>
void main()
{
    int n, count = 0;
    clrscr();
    printf("Enter a number : ");
    scanf("%d", &amp;n);
    while(n > 0)
    {
        count++;
        n = n / 10;
    }
    printf("\nThe number of digits is : %d", count);
    getch();
}

Output:

Enter a number : 179
The number of digits is : 3