1 void ch2_1() {
2 using namespace std;
3 cout << "xxxxxxxx" << endl;
4 }
5
6 void ch2_2() {
7 using namespace std;
8 double num;
9 cout << "please input a distance in long: ";
10 cin >> num;
11 cout << "it equals " << num * 220 << endl;
12 }
13
14 void ch2_3_1() {
15 using namespace std;
16 cout << "Three blind mice" << endl;
17 }
18
19 void ch2_3_2() {
20 using namespace std;
21 cout << "See how they run" << endl;
22 }
23
24 void ch2_3() {
25 using namespace std;
26 ch2_3_1();ch2_3_1();
27 ch2_3_2();ch2_3_2();
28 }
29
30 void ch2_4() {
31 using namespace std;
32 unsigned int age;
33 cout << "enter your age: ";
34 cin >> age;
35 cout << "months: " << age * 12 << endl;
36 }
37
38 double ch2_5_1(double c){
39 using namespace std;
40 return c * 1.8 + 32;
41 }
42
43 void ch2_5() {
44 using namespace std;
45 double c;
46 cout << "enter a celsius value: ";
47 cin >> c;
48 cout << c << "degrees Celsius is " << ch2_5_1(c) << " degrees Fahrenheit" << endl;
49 }
50
51 double ch2_6_1(double lyear){
52 return lyear * 63240;
53 }
54
55 void ch2_6() {
56 using namespace std;
57 double lyear;
58 cout << "enter the number of light years: ";
59 cin >> lyear;
60 cout << lyear << " light years = " << ch2_6_1(lyear) << " astronomical units" << endl;
61 }
62
63 void ch2_7_1(unsigned int h, unsigned int m){
64 using namespace std;
65 cout << "Time: " << h << ":" << m << endl;
66 }
67
68 void ch2_7() {
69 using namespace std;
70 unsigned int h, m;
71 cout << "enter the number of hours: ";
72 cin >> h;
73 cout << "enter the number of minutes: ";
74 cin >> m;
75 ch2_7_1(h, m);
76 }
