C++面向对象程序设计编程题答案

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
## C++面向对象程序设计编程题答案
自己练习c++时写的一些代码供大家参考，如有错误请大家指出
//1
/*
	float x, y;
	cin >> x;
	if (x < 1)y = x;
	else if (x >= 1 && x <= 10)y = 2 * x - 1;
	else y = 3 * x - 11;
	cout << y << endl;
	system("pause");
*/
//2
/*
	int i = 0, start;
	for (start = 100;start < 1000;start++)
		if ((start % 10 + start / 10 % 10 + start / 100) % 2 == 0)
			i++;
	cout << i << endl;
	system("pause");
*/
//3
/*
	int a,n=0;
	cin >> a;
	while (a != 0)
	{
		a /= 10;
		n++;
	}
	cout << n;
	system("pause");
*/
//4
/*
	int n;
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		for (int j = 0;j < n - i;j++)
			cout << ' ';
		for (int j = 0;j < 2 * i - 1;j++)
			cout << i;
		cout << endl;
	}
	system("pause");
*/

//5
/*
	int n;
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		for (int j = 0;j < n - i;j++)
			cout << ' ';
		for (int j = 0;j < 2 * i - 1;j++)
			cout << '*';
		cout << endl;
	}
	for (int i = 1;i < n;i++)
	{
		cout << "  ";
		for (int j = 0;j < 2 * n - 5;j++)
			cout << '*';
		cout << endl;
	}
	system("pause");
*/
//6
/*
	int n;
	int sum=0;
	int num=1;
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		num *= i;
		sum += num;
	}
	cout << sum;
	system("pause");
*/
//6
/*
	int n = 2, i = 3, j = 2;
	while (n < 500)
	{
		cout <<"n:"<< n <<"i:"<<i<<"j:"<<j<< endl;
		n += 3;
		i += 5;
		j += 7;
	}
	system("pause");
*/
//7
/*
	int num = 0;
	int k = 0;
	for(int i=0;i<=10;i++)
		for (int j = 0;j <= (100 - 10 * i) /5 ;j++)
		{
			k = 100 - 10 * i - 5 * j;
			cout << "i:" << i << "j:" << j << "k:" << k << endl;
		}
	system("pause");
*/
//9
/*
	const char*str1 = "ABCDE";
	const char*str2 = "JKLMN";
	for (int i = 0;i < 5;i++)
		for (int j = 0;j < 5;j++)
			if ((i == 0 && j == 0) || (j == 0 && (i == 3 || i == 4)))
				continue;
			else
				cout << "甲队：" << str1[i] << " vs " << "乙队：" << str2[j] << endl;
	system("pause");
*/

//10
/*
	const char*p[5] = { "zhang","wang","li","zhao","弃权：" };
	int n[5] = {0,0,0,0,0};
	HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
	cout << "zhang:" << n[0] << " wang:" << n[1] << " li:" << n[2] << " zhao:" << n[3]<<" 弃权:"<<n[4]<<endl;
	cout << "您的选择的是：" << endl;
	COORD pos[6] = {6,0,13,0,18,0,25,0,13,1,32,0};
	cout << endl;
	int flag;
	SetConsoleCursorPosition(hOut, pos[4]);
	cin >> flag;
	SetConsoleCursorPosition(hOut, pos[4]);
	cout << ' ';
	while (flag != -1)
	{
		if (flag > 0 && flag < 5)
		{
			n[flag - 1]++;
			SetConsoleCursorPosition(hOut, pos[flag-1]);
			cout << n[flag - 1];
		}
		else {
			n[4]++;
			SetConsoleCursorPosition(hOut, pos[5]);
			cout << n[4];
		}
		SetConsoleCursorPosition(hOut, pos[4]);
		cin >> flag;
		SetConsoleCursorPosition(hOut, pos[4]);
		cout << ' ';
	}
	system("pause");
*/

//10
/*
	int *pArr = new int[5]{1,2,3,4,5};
	int n = 1;
	int temp;
	temp = n;
	n = pArr[3];
	pArr[3] = temp;
	for (int i = 0;i < 5;i++)
		cout << pArr[i] << endl;
	system("pause");
*/