Question

Write a program in C that calculates how many digits a number contains:

Enter a number: 374
The number 374 has 3 digits

You may assume that the number has no more than four digits. Hint: Use if statements to test the number. For example, if the number is between 0 and 9, it has one digit. If the number is between 10 and 99, it has two digits.

Answer 1

#include<stdio.h>

int main()
{
   int n, digits = 0;
   printf("Enter a number: ");
   scanf("%d",&n);
   
   if(n>=0 && n<=9){
      digits = 1;
   }
   else if(n>=10 && n<=99){
      digits = 2;
   }
   else if(n>=100 && n<=999){
      digits = 3;
   }
   
   printf("The number %d has %d digits\n", n, digits);
   
    return 0;
}