This comprehensive course helps absolute beginners learn to code with C++ and build a strong foundation in the language.

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Learn C++ for free with this interactive course, and get a handle on one of the most popular programming languages in the world.

You'll start with a simple hello world program and proceed to cover core concepts such as conditional statements, loops, and functions in C++, before moving on to more advanced topics like inheritance, classes, and templates, along with much more.

By the time you're done, you'll be an intermediate level C++ developer, ready to take on your own projects.

Learn C++ from Scratch

A function needs function definition to perform a specific task.

A function needs function definition to perform a specific task.

If a function returns no value, the return type must be declared as void.

If a function returns no value, the return type must be declared as void.

A local variable declared in a function is usable out side that function.

A local variable declared in a function is usable out side that function.

cout statement needs to be written after the return statement

Cannot multiply x with y and return the answer in the same line

Need to pass both x and y parameters by reference 

Cannot return a value since the function is of type void

What is the error in the following function definition:
```
void myfunction(int x,int y){
 cout<<x*y;
 return(x*y);
}
```

What is the error in the following function definition:
<pre><code>void myfunction(int x,int y){
 cout&lt;&lt;x*y;
 return(x*y);
}
</code></pre>

The type of the parameter y is missing which should be int

Find the error in the following function definition:
```
int myfunction(int x,y){
    return(x*y);
}
```

Find the error in the following function definition:
<pre><code>int myfunction(int x,y){
 return(x*y);
}
</code></pre>

What is the value of `answer` in the following recursive function?
```
int fun(int n)
{
	if (n == 4){
	return n;
  }else{
  return 2*fun(n+1);
  }
}

int main(){
int answer = fun(2);
}
```



What is the value of <code>answer</code> in the following recursive function?
<pre><code>int fun(int n)
{
	if (n == 4){
	return n;
 }else{
 return 2*fun(n+1);
 }
}

int main(){
int answer = fun(2);
}
</code></pre>

Test your understanding of functions and recursion in C++ by taking this quiz.


Quiz on Functions and Recursion

Test your understanding of functions and recursion in C++ by taking this quiz.

Introduction

Variables & User Input

Simple Maths

Conditional Statements

Loops

Functions and Recursion

C++ Exam 1

Pointers & Arrays

C++ Exam 2

Classes and Inheritance

Templates

C++ Exam 3

Deleted lessons

Quiz on Functions and Recursion