#include<stdio.h>
int countDigits(num);
int main(){
int num,count;
printf("Enter a number: ");
scanf("%d",&num);
count = countDigits(num);
printf("Total digits is: %d",count);
return 0;
}
int countDigits(int num){
static int count=0;
if(num!=0){
count++;
countDigits(num/10);
}
return count;
}
Cool! A rather simple one-liner would be ceil(log10(n)) :) That's it.
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