题解 | #规律数列求和#
规律数列求和
https://www.nowcoder.com/practice/e05d1c142b3d4898be7183289a00ce5f
#include <iostream>
using namespace std;
int main() {
long sum=0,b=1,c,i;
for(i=1;i<11;i++){
b=10*b;
c=b-1;
sum=c+sum;}
// write your code here......
cout<<sum;
return 0;
}
#大一就出来卷#