统计一个整数的位数。从键盘读入一个整数，统计该数的位数。
完整代码
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[]) {
int number, bits = 0;
printf("Input your number:");
scanf("%d", &number);
do {
number = number / 10;
bits++;
} while (number != 0);
printf("It contains %d digits.", bits);
return 0;
}运行结果1
Input your number:-99
It contains 2 digits.
运行结果2
Input your number:0
It contains 1 digits.
