Write a program that lets you know if you can have a key or not, based on your role at the school.
First ask for the user’s role at the school. They can be a student, administrator, or a teacher. (And remember that capitalization is important! ‘Student’ is not the same as ‘student’.)
Example 1: Administrator or Teacher
For example, if this was the input:
Are you an administrator, teacher, or student?: teacher
This should be the output:
Administrators and teachers get keys!
Example 2: Student
And if this was the input:
Are you an administrator, teacher, or student?: student
This should be the output:
Students do not get keys!
(Note: You should also be able to handle a situation where the user enters a value other than administrator, teacher or student and tell them they must be one of the three choices!)
Example 3: Other
If they input anything else:
Are you an administrator, teacher, or student?: secretary
This should be the output:
You can only be an administrator, teacher, or student!
Ответ:
#include <iostream>
#include <cmath>
double infiniteSum(double epsilon) {
double sum = 0.0;
double term = 1.0;
int k = 0;
while (std::abs(term) > epsilon) {
sum += term;
k++;
term = 1.0 / std::pow(2, k);
}
return sum;
}
Объяснение:
Эта функция вычисляет сумму ряда 1/2^k до тех пор, пока очередной член не станет меньше заданной точности epsilon. Теперь вы можете использовать эту функцию для вычисления требуемых рядов:
int main() {
double eps = 0.0001;
double sum1 = infiniteSum(eps); // сумма ряда 1/2^k
double sum2 = infiniteSum(eps/10); // сумма ряда 1/k^2
std::cout << «Сумма ряда 1/2^k: » << sum1 << std::endl;
std::cout << «Сумма ряда 1/k^2: » << sum2 << std::endl;
return 0;
}
В этом примере мы вычисляем суммы рядов с точностью eps=0.0001 и eps/10, соответственно, и выводим результаты на экран.