求大佬教我哪错了

Irascible_boy1_0 @ 2017-08-20 14:58:01

#include<iostream>
using namespace std;
int main() {
    int k,a=0;
    double c,n=0;
    cin>>k;
    do {
        c=0;
        for(n=0; n<=a; n++)
            c=c+1/n;
        a++;
    } while(c<=k);
    cout<<n;
}
这样出不来啊

by 攀岩高手 @ 2017-08-22 10:46:58

变量c应该在循环外初始化；for循环和变量a没有意义，应去掉.

#include <iostream>
using namespace std;
int main() {
    int k;
    double c=0, n=0;
    cin >> k;
    do {
        n++;
        c+=1/n;
    } while (c<=k);
    cout << n;
    return 0;
}