Cpp Function Declaration

C++ function declaration

Created By: chatGPT

In C++, a function declaration tells the compiler about the function's name, return type, and parameters. It does not provide the body or implementation of the function. Here’s how you can declare a function:

return_type function_name(parameter_type parameter_name);

For example, if you want to create a function that adds two integers and returns the result, you can declare it like this:

int add(int a, int b);

This declaration states that the add function will accept two integers and return an integer. To make use of this function, you must define its body elsewhere in your code:

int add(int a, int b) {
    return a + b;
}

You can then call this function in your main method or anywhere else in your code. For example:

int main() {
    int sum = add(5, 3);
    std::cout << "Sum: " << sum;
    return 0;
}

Make sure to place the function declaration before it is used. If the function is defined after the main method, you need to declare it at the top.

int add(int a, int b);

int main() {
    int sum = add(5, 3);
    return 0;
}

int add(int a, int b) {
    return a + b;
}