实验任务1：
代码：
1 #include <iostream>
2 #include <string>
3 #include <vector>
4 #include <algorithm>
5
6 using namespace std;
7 template<typename T>
8 void output(const T &c);
9 void test1();
10 void test2();
11 void test3();
12
13 int main() {
14 cout << "测试1: \n";
15 test1();
16
17 cout << "\n测试2: \n";
18 test2();
19
20 cout << "\n测试3: \n";
21 test3();
22 }
23
24 template <typename T>
25 void output(const T &c) {
26 for(auto &i: c)
27 cout << i << " ";
28 cout << endl;
29 }
30
31 void test1() {
32 string s0{"0123456789"};
33 cout << "s0 = " << s0 << endl;
34
35 string s1{s0};
36 reverse(s1.begin(), s1.end());
37 cout << "s1 = " << s1 << endl;
38
39 string s2{s0};
40 reverse_copy(s0.begin(), s0.end(), s2.begin());
41 cout << "s2 = " << s2 << endl;
42 }
43
44 void test2() {
45 vector<int> v0{2, 0, 4, 9};
46 cout << "v0: ";
47 output(v0);
48
49 vector<int> v1{v0};
50 reverse(v1.begin(), v1.end());
51 cout << "v1: ";
52 output(v1);
53
54 vector<int> v2{v0};
55 reverse_copy(v0.begin(), v0.end(), v2.begin());
56 cout << "v2: ";
57 output(v2);
58 }
59 void test3() {
60 vector<int> v0{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
61 cout << "v0: ";
62 output(v0);
63
64 vector<int> v1{v0};
65 rotate(v1.begin(), v1.begin()+1, v1.end());
66 cout << "v1: ";
67 output(v1);
68
69 vector<int> v2{v0};
70 rotate(v2.begin(), v2.begin()+2, v2.end());
71 cout << "v2: ";
72 output(v2);
73
74 vector<int> v3{v0};
75 rotate(v3.begin(), v3.end()-1, v3.end());
76 cout << "v3: ";
77 output(v3);
78
79 vector<int> v4{v0};
80 rotate(v4.begin(), v4.end()-2, v4.end());
81 cout << "v4: ";
82 output(v4);
83 }
任务1
运行结果：
实验任务2：
代码：
1 #include <iostream>
2 #include <vector>
3 #include <string>
4 #include <algorithm>
5 #include <numeric>
6 #include <iomanip>
7
8 using namespace std;
9 template<typename T>
10 void output(const T &c);
11
12 int rand_int_100();
13 void test1();
14 void test2();
15
16 int main() {
17 cout << "测试1: \n";
18 test1();
19
20 cout << "\n测试2: \n";
21 test2();
22 }
23
24
25 template <typename T>
26 void output(const T &c) {
27 for(auto &i: c)
28 cout << i << " ";
29 cout << endl;
30 }
31 int rand_int_100() {
32 return rand() % 101;
33 }
34
35 void test1() {
36 vector<int> v0(10);
37 generate(v0.begin(), v0.end(), rand_int_100);
38 cout << "v0: ";
39 output(v0);
40
41 vector<int> v1{v0};
42 sort(v1.begin(), v1.end());
43 cout << "v1: ";
44 output(v1);
45
46 vector<int> v2{v0};
47 sort(v2.begin()+1, v2.end()-1);
48 cout << "v2: ";
49 output(v2);
50 }
51
52 void test2() {
53 vector<int> v0(10);
54 generate(v0.begin(), v0.end(), rand_int_100);
55 cout << "v0: ";
56 output(v0);
57
58 auto iter1 = min_element(v0.begin(), v0.end());
59 cout << "最小值: " << *iter1 << endl;
60
61 auto iter2 = max_element(v0.begin(), v0.end());
62 cout << "最大值: " << *iter2 << endl;
63
64 auto ans = minmax_element(v0.begin(), v0.end());
65 cout << "最小值: " << *(ans.first) << endl;
66 cout << "最大值: " << *(ans.second) << endl;
67 double avg1 = accumulate(v0.begin(), v0.end(), 0)/v0.size();
68 cout << "均值: " << fixed << setprecision(2) << avg1 << endl;
69
70 cout << endl;
71
72 vector<int> v1{v0};
73 cout << "v0: ";
74 output(v0);
75 sort(v1.begin(), v1.end());
76 double avg2 = accumulate(v1.begin()+1, v1.end()-1, 0)/(v1.size()-2);
77 cout << "去掉最大值、最小值之后，均值: " << avg2 << endl;
78 }
任务2
运行结果：
实验任务3：
代码：
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4
5 bool is_palindrome(std::string s);
6
7 int main() {
8 using namespace std;
9 string s;
10 while (cin >> s) // 多组输入，直到按下Ctrl+Z后结束测试
11 cout << boolalpha << is_palindrome(s) << endl;
12 }
13
14 // 函数is_palindrome定义
15 bool is_palindrome(std::string s) {
16 // 判断字符串是否和反转后一致（区分大小写）
17 return s == std::string(s.rbegin(), s.rend());
18 }
任务3
运行结果：
实验任务4：
代码：
1 #include <iostream>
2 #include <string>
3 #include <algorithm>
4
5 std::string dec2n(int x, int n = 2);
6
7 int main() {
8 using namespace std;
9 int x;
10 while (cin >> x) {
11 cout << "十进制: " << x << endl;
12 cout << "二进制: " << dec2n(x) << endl;
13 cout << "八进制: " << dec2n(x, 8) << endl;
14 cout << "十六进制: " << dec2n(x, 16) << endl << endl;
15 }
16 }
17
18 std::string dec2n(int x, int n) {
19 if (x == 0) return "0";
20 std::string result;
21 const char digits[] = "0123456789ABCDEF";
22 while (x > 0) {
23 result += digits[x % n];
24 x /= n;
25 }
26 std::reverse(result.begin(), result.end());
27 return result;
28 }
任务4
运行结果：
实验任务5：
代码：
1 #include<iostream>
2 using namespace std;
3 int main(){
4 cout<<" ";
5 for(char c='a';c<='z';++c){
6 cout<<c<<" ";
7 }
8 cout<<endl;
9 for(int i=0;i<26;i++){
10 cout<<(i+1<10 ? " ":"")<<i+1<<" ";
11 for(int j=0;j<26;j++){
12 char letter ='A'+(i+j)%26;
13 cout<<letter<<" ";
14 }
15 cout<<endl;
16 }
17 return 0;
18 }
任务5
实验结果:
实验任务6：
代码：
1 #include<iostream>
2 #include<random>
3 #include<iomanip>
4
5 using namespace std;
6
7 int main()
8 {
9 mt19937 generator;
10 uniform_int_distribution<int> dis1(1, 10);
11 uniform_int_distribution<int> dis2(1, 4);
12 int count = 1, right = 0;
13 while (count <= 10)
14 {
15 int a = dis1(generator), b = dis1(generator), c = dis2(generator),answer;
16 if (c == 1)
17 {
18 cout << a << " " << "+" << " " << b << " = ";
19 cin >> answer;
20 if (answer == a + b)
21 right++;
22 count++;
23 }
24
25 else if (c == 2 && a > b)
26 {
27 cout << a << " " << "-" << " " << b << " = ";
28 cin >> answer;
29 if (answer == a - b)
30 right++;
31 count++;
32 }
33
34 else if (c == 3)
35 {
36 cout << a << " " << "*" << " " << b << " = ";
37 cin >> answer;
38 if (answer == a * b)
39 right++;
40 count++;
41 }
42
43 else if (c == 4 && a % b == 0)
44 {
45 cout << a << " " << "/" << " " << b << " = ";
46 cin >> answer;
47 if (answer == a / b)
48 right++;
49 count++;
50 }
51 }
52 cout << "正确率：" << fixed<< setprecision(2)<<(right * 10.0) << "%" << endl;
53 return 0;
54 }
任务6
实验结果：
实验总结：
1.在完成实验任务时总出现些许小错误，有输出格式的错误，有写代码时打字的错误，导致做实验的速度下降。
2.任务5、6时部分代码不能通过自己已有的知识完成，通过查阅书籍和网络辅助完成。
3.下次尽量把博客写美观~~~///(^v^)\\\~~~
标签：begin,初体验,end,cout,int,编程,C++,v0,include From： https://www.cnblogs.com/xiarihua/p/18453433