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In programming, a function is a block of code that performs a specific task or computation.
Here is an example of how the program can be implemented using three separate functions for the mathematical operations:
#include <iostream>
#include <string>
// Function to add two numbers
int add(int a, int b) {
return a + b;
}
// Function to subtract two numbers
int subtract(int a, int b) {
return a - b;
}
// Function to multiply two numbers
int multiply(int a, int b) {
return a * b;
}
int main() {
// Get the first and second numbers from the user
std::cout << "What is the first number?: ";
int a;
std::cin >> a;
std::cout << "What is the second number?: ";
int b;
std::cin >> b;
// Get the operation to perform from the user
std::cout << "Choose an operation (add, subtract, multiply): ";
std::string op;
std::cin >> op;
// Call the appropriate function based on the operation chosen by the user
int result = 0;
if (op == "add") {
result = add(a, b);
} else if (op == "subtract") {
result = subtract(a, b);
} else if (op == "multiply") {
result = multiply(a, b);
} else {
// Invalid operation was chosen
std::cout << "Invalid operation" << std::endl;
return 0;
}
// Print the result of the operation
std::cout << a << " " << op << " " << b << " = " << result << std::endl;
return 0;
}
In this program, the add(), subtract(), and multiply() functions are defined to perform the corresponding mathematical operations on two given numbers.
The main() function prompts the user for two numbers and the operation to perform, and then calls the appropriate function based on the operation chosen by the user.
Finally, the result of the operation is printed to the output.
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