#include?
#include?

int?getNums（int?num）;

int?getEveryRes（int?start?int?end?int?len）;

int?main（）?{
????int?num?=?-1;
????static?int?count1?=?0;
????int?length?=?-1;
????//?判斷當(dāng)前輸入數(shù)是幾位數(shù)
????printf（“input?a?num?:?“）;
????scanf（“%d“?&num）;
????length?=?getNums（num）;
????printf（“你輸入的是：%d?位數(shù)\n“?length）;
????for?（int?i?=?1;?i?<=?length;?++i）??//?位數(shù)?1?1-9??2??10?-99?3?100-999
????{
????????if?（i?==?length）
????????{
????????????count1?+=?getEveryRes（pow（10?i?-?1）?num?i）;
????????}
????????else
????????{
????????????count1?+=?getEveryRes（pow（10?i?-?1）?pow（10?i）?-?1?i）;
????????}
????}

????printf（“%d?-?%d?中1出現(xiàn)的個數(shù)?=?%d\n“?1?n