@[liuzihao1111](/user/1449855)
求关
```cpp
#include<iostream>
#include<string>
using namespace std;
int main (){
int num=0;//要初始化
char s[8];
cin>>s;
for(int i=0;i<8;i++){
if(s[i]=='1'){
num++;
}
}
cout<<num;
}
```
by Yxy7952 @ 2024-09-20 21:47:22
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
string a;
long long s=0;
cin>>a;
for(int i=0;i<a.size();i++)
{
if(a[i]=='1')s++;
}
cout<<s;
return 0;
}
```
字符串更简单~~不要关注~~
by wangtanhao2013 @ 2024-09-20 21:56:36
已AC
by liuzihao1111 @ 2024-09-20 22:07:22