题解 | #包含数字9的数#
包含数字9的数
https://www.nowcoder.com/practice/0948f4f3344c452f843afd3585dd0f8d
#include <stdio.h>
int main() {
int cnt = 0;
for (int i = 1; i <= 2019; i++) {
int j = i;
while (j) {
if (j % 10 == 9) {
cnt++;
break;
}
j /= 10;
}
}
printf("%d\n", cnt);
return 0;
}
