countnum.c

#include <stdio.h>
int main() {
    long long n;
    int count = 0;
    printf("Enter an integer: ");
    scanf("%lld", &n);
 
    // iterate until n becomes 0
    // remove last digit from n in each iteration
    // increase count by 1 in each iteration
    while (n != 0) {
        n /= 10;     // n = n/10
        ++count;
    }

    printf("Number of digits: %d", count);
}







/*
👋 Hi, I’m @aarushinair - Aarushi Nair (she/her/ella)
👀 I’m a Computer Science Engineering Student
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*/