c++ primer plus 第二章 课后题答案
#include<iostream> using namespace std; int main() { cout << "My name is Jiantong Chen." << endl << "I'm a student in the Xi'an University."; cin.get(); return 0; }
#include<iostream> using namespace std; int main() { int a; cout << "Please enter a number of the long:"; cin >> a; cout << endl << "The ma of it is:" << (a*220); cin.get(); cin.get(); return 0; }
#include<iostream> void print_1(void); void print_2(void); using namespace std; int main() { print_1(); print_1(); print_2(); print_2(); cin.get(); return 0; } void print_1(void) { cout << "Three blind mice" << endl; } void print_2(void) { cout << "See how they run" << endl; }
#include<iostream> using namespace std; int main() { int age; cout << "Enter you age:"; cin >> age; cout << endl << "This age contains " << (age*12) << " months."; cin.get(); cin.get(); return 0; }
#include<iostream> using namespace std; double convert(double); int main() { int Celsius; double Fahrenheit; cout << "Please enter a Celsius value: "; cin >> Celsius; Fahrenheit = convert(Celsius); cout << endl << Celsius << " degrees Celsius is " << Fahrenheit << " degrees Fahrenheit."; cin.get(); cin.get(); return 0; } double convert(double Celsius) { double Fahrenheit; Fahrenheit = 1.8*Celsius + 32.0; return Fahrenheit; }
#include<iostream> using namespace std; double convert(double); int main() { double in_put; double out_put; cout << "Enter the number of light years: "; cin >> in_put; out_put = convert(in_put); cout << endl << in_put << " light years = " << out_put << " astronomical units."; cin.get(); cin.get(); return 0; } double convert(double in_put) { double out_put; out_put = in_put * 63240; return out_put; }
#include<iostream> using namespace std; void display(int, int); int main() { int hours; int minutes; cout << "Enter the number of hours : "; cin >> hours; cout << "Enter the number of minutes : "; cin >> minutes; display(hours, minutes); cin.get(); cin.get(); return 0; } void display(int a,int b) { cout << "Time: " << a << ":" << b; }