題目:
https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1863
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| #include <iostream>
using namespace std;
long long sum(long long n){
long long tmp = 0;
while(n > 0){
tmp += n % 10;
n /= 10;
}
return tmp;
}
int main(){
string str;
long long int num;
int degree;
while(cin >> str){
if(str == "0") break;
num = 0;
for(int i=0; i<str.size(); ++i){
num += str[i] - 48;
}
if(num%9 != 0){
cout << str << " is not a multiple of 9.\n";
continue;
}
degree = 1;
while(num >= 10){
num = sum(num);
degree++;
}
cout << str << " is a multiple of 9 and has 9-degree " << degree << ".\n";
}
return 0;
}
|
