I can\'t figure out how to solve this practice problem. \"write a function num_d

Question

I can't figure out how to solve this practice problem.
"write a function num_digits(n) that returns the number ofdigits in n. (to determine number of digits, divide it by 10repeatedly.)
this is what I have, but it's not working properly and I knowi have a mistake, just can't figure out where.


#include <stdio.h>
int num_digits(int n) {    int i,num;    while (num != 0){    i = 0;    num /= 10;    i++;}    printf("%d", i); }
int main(void) {    int n;    scanf("%d", n);    num_digits(n);    system("PAUSE");    return 0; }
Thanks for the help!
"write a function num_digits(n) that returns the number ofdigits in n. (to determine number of digits, divide it by 10repeatedly.)
this is what I have, but it's not working properly and I knowi have a mistake, just can't figure out where.


#include <stdio.h>
int num_digits(int n) {    int i,num;    while (num != 0){    i = 0;    num /= 10;    i++;}    printf("%d", i); }
int main(void) {    int n;    scanf("%d", n);    num_digits(n);    system("PAUSE");    return 0; }
Thanks for the help! #include <stdio.h>
int num_digits(int n) {    int i,num;    while (num != 0){    i = 0;    num /= 10;    i++;}    printf("%d", i); }
int main(void) {    int n;    scanf("%d", n);    num_digits(n);    system("PAUSE");    return 0; }
Thanks for the help!

Explanation / Answer

please rate - thanks main problem was i=0; was in the loop, it also wasn't returning thevalue as required #include #include int num_digits(int n) {     int i;     i = 0;     while (n > 0){        n /= 10;     i++;}     return i; } int main(void) {     int n,num;     printf("Enter a number: ");     scanf("%d", &n);     num=num_digits(n);     printf("There are %d digits in %d",num,n );     getch();     return 0; }

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