firstly write a program to accept the number of telephone calls made by a customer and the print out the rate in cents.

secondly define a structure employee with name, category , salary, tax as a member. read the name category and salary of employee and calculate the tax as below

categories
A 10% OF SALARY
B 15% OF SALARY
C 20% OF SALARY
OTHERS 30% OF SALARY

Sure! Here are two separate programs to accomplish the tasks you mentioned:

Program 1: To calculate the rate for telephone calls:
```python
# Accept the number of telephone calls
num_calls = int(input("Enter the number of telephone calls: "))

# Print out the rate in cents
rate = num_calls * 0.10 # Assuming the rate is 10 cents per call
print("The rate is", rate, "cents")
```

Program 2: To calculate the tax for an employee based on their category and salary using a structure:
```python
# Define the Employee structure
class Employee:
def __init__(self, name, category, salary):
self.name = name
self.category = category
self.salary = salary
self.tax = None

# Function to calculate tax based on category and salary
def calculate_tax(employee):
if employee.category == 'A':
employee.tax = employee.salary * 0.10
elif employee.category == 'B':
employee.tax = employee.salary * 0.15
elif employee.category == 'C':
employee.tax = employee.salary * 0.20
else:
employee.tax = employee.salary * 0.30

# Read the employee details
name = input("Enter employee name: ")
category = input("Enter employee category (A, B, C or OTHERS): ")
salary = float(input("Enter employee salary: "))

# Create an instance of the Employee structure
employee = Employee(name, category, salary)

# Calculate the tax
calculate_tax(employee)

# Print the tax amount
print("The tax for", employee.name, "is", employee.tax)
```

Please note that these programs are written in Python. Let me know if you have any further questions!

Sure! Here's a program in Python to solve the first problem:

```python
def calculate_rate(calls):
if calls <= 100:
rate = 50
elif calls <= 200:
rate = 70
elif calls <= 300:
rate = 100
else:
rate = 150

# Convert rate to cents
rate_cents = rate * 100

return rate_cents

# Accept the number of telephone calls made by the customer
calls = int(input("Enter the number of telephone calls: "))

# Calculate and print the rate in cents
rate = calculate_rate(calls)
print("Rate: {} cents".format(rate))
```

To get the rate based on the number of telephone calls, the program uses a series of `if-elif-else` statements. If the number of calls is less than or equal to 100, the rate is set to 50. If it is between 100 and 200, the rate is set to 70, and so on. Finally, the rate is multiplied by 100 to convert it to cents.

Now, let's move on to the second problem. Here's a program in C++ to solve it:

```cpp
#include <iostream>
using namespace std;

struct Employee {
string name;
char category;
double salary;
double tax;
};

void calculate_tax(Employee& emp) {
switch(emp.category) {
case 'A':
emp.tax = 0.1 * emp.salary;
break;
case 'B':
emp.tax = 0.15 * emp.salary;
break;
case 'C':
emp.tax = 0.2 * emp.salary;
break;
default:
emp.tax = 0.3 * emp.salary;
}
}

int main() {
Employee emp;

// Read the name, category, and salary of employee
cout << "Enter the name of employee: ";
getline(cin, emp.name);

cout << "Enter the category of employee (A, B, C, or OTHERS): ";
cin >> emp.category;

cout << "Enter the salary of employee: ";
cin >> emp.salary;

// Calculate the tax
calculate_tax(emp);

// Print the tax
cout << "Tax: " << emp.tax << endl;

return 0;
}
```

In this program, we define a structure called `Employee` with four members: `name`, `category`, `salary`, and `tax`. We then define a function `calculate_tax` to calculate the tax based on the employee's category. The function uses a `switch` statement to determine the tax rate based on the category, and stores the calculated tax in the `tax` member of the `Employee` structure.

In the `main()` function, we create an instance of the `Employee` structure and read the values for `name`, `category`, and `salary` from the user. We then call the `calculate_tax` function to calculate the tax for the employee, and print the result.