birthday candles
A certain gentleman has held a birthday party every year since a certain year, and every time he has to blow out the same number of candles as his age.
Now counting, he blew out a total of 236 candles.
Excuse me, at what age did he start birthday parties?
Please fill in the age at which he started his birthday party.
.
Method: while violence
Result: 26 (now 33)
#include<iostream>
using namespace std;
int main() {
int sum = 0;
int begin = 1;
while (1) {
int i = begin;
while (sum <= 236) {
sum += i;
if (sum == 236) {
cout << begin << endl;
//cout <<i << endl;//Current age
exit(0);
}
i++;
}
begin++;
sum = 0;
}
return 0;
}
.
.
It can also be combined with the summation formula of arithmetic progression!