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Basic
Switch Case
Goto
Operators
if Statement
Nested if
While Loop
For Loop
Patterns
Array
2D Array
String Function Example
Pointers
Recursion Function
Structure
Excersises
Others



Count Number of Digits in a Given Number


C program to Count number of digits in a given number using while loop.

Example : pgm.c

#include<stdio.h>
int main(){
    int d=0,n;
    printf("\nEnter the Number : ");
    scanf("%d",&n);
    while(n!=0){
        n=n/10;
        d++;
    }
    printf("\nNo of Digits : %d",d);
    return 0;
}

Output:

Enter the Number : 852147
No of Digits : 6