Count how many integers are in a number in C

#include <stdio.h>

int countnums(int x);


int main()
{
    int input;
    scanf("%d",&input);
    printf("%d",countnums(input));
}


int countnums(int x)
{
    int count;
    for(count=0;x!=0;count++)
    {
        x=x/10;
    }
    return count;
}