Creating Reusable Functions

Snippet

Creating Reusable Functions

Functions are reusable blocks of code that perform a specific task. A function definition includes a return type (int), a name (add), and parameters in parentheses. Parameters act as inputs the function receives when called. The return statement sends a value back to the caller. To use a function, call it by name with arguments inside the parentheses. The function then returns the result which can be stored in a variable.

snippet.cpp

cpp

#include <iostream>
 
int add(int a, int b) {
    return a + b;
}
 
int main() {
    int result = add(3, 4);
    std::cout << "3 + 4 = " << result << std::endl;
    
    return 0;
}

Breakdown

int add(int a, int b) {

Function definition: returns int, takes two int parameters

return a + b;

Returns the sum of parameters a and b

int result = add(3, 4);

Calls function with arguments 3 and 4, stores returned value

std::cout << "3 + 4 = " << result << std::endl;

Prints the calculated result

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