01 #include<stdio.h>
02 
03 int main()
04  {
05   int num,count=0; 
06   printf("Enter a number: ");
07   scanf("%d",&num); 
08  
09   while(num)
10   { 
11    num=num/10; 
12    count++;
13   }
14   printf("Total digits is:  %d",count); 
15   return 0; 
16  }

 
 OUTPUT :
 
 Enter a number: 12446
 Total digits is : 5