3.24
#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
vector<int> x;
int s1;
while (cin >> s1) {
x.push_back(s1);
}
for (auto i = x.begin();i < x.end()-1;++i){
cout << *i + *(i + 1) << endl;
}
return 0;
}
#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
vector<int> s1;
int s2;
while (cin >> s2) {
s1.push_back(s2);
}
auto i1 = s1.begin();
auto i2 = s1.end() - 1;
for (;i1 < i2;++i1, --i2)
cout << *i1 + *i2 << endl;
return 0;
}
3.25
#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
vector<int> scores(11, 0);
int grade;
while(cin>>grade){
auto duanwei = scores.begin();
if (grade <= 100)
++*(duanwei + grade / 10); //单次运行的程序,duanwei初始化都是0,可是循环保存这样的话duanwei就不会一直为0,就会计算出错
//++scores[grade/10];
for(auto &e:scores)
cout << e << endl;
}
return 0;
}
3.26
迭代器不支持加法运算