Question

How to count input number digits in C

Answer 1

#include <stdio.h> 

int countdigits(int n);

int main(void)
{   
     int n;

     printf("Enter a number:  ");
     scanf("%d",&n);
     
     int size = countdigits(n);
     
     printf("%d", size);
         
     return 0;
}

int countdigits(int n)
{
    int count = 0;

    while (n != 0)
    {
        n /= 10;
        count++;
    }
    
    return count;
}

 
/*
run:
   
Enter a number:  12345
5

*/

 

70+ SQL courses for beginners and professionals