Lesson 7
Functions
Functions help organize your programs into smaller reusable parts. They make code easier to read, maintain, and test.
Simple Function
Example
#include <iostream>
using namespace std;
void greet()
{
cout << "Welcome to C++ programming." << endl;
}
int main()
{
greet();
return 0;
}Function with Return Value
Example
#include <iostream>
using namespace std;
int add(int a, int b)
{
return a + b;
}
int main()
{
cout << "Sum = " << add(5, 3) << endl;
return 0;
}Book Tip:
This short lesson is part of a larger learning path. The full book expands each topic with more explanation, exercises, and projects.