Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind C++ Default Parameters?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ myFunction( string country = "Norway" ) {3Order
Put the learning moves in the order that makes the concept easiest to apply.
If we call the function without an argument, it uses the default value ("Norway"):
You can also use a default parameter value, by using the equals sign ( = ).
Default Parameter Value
Default Parameter Value
You can also use a default parameter value, by using the equals sign ( = ).
If we call the function without an argument, it uses the default value ("Norway"):
Example
void myFunction( string country = "Norway" ) {
cout
<< country << "\n";
}
int main() {
myFunction("Sweden");
myFunction("India");
myFunction();
myFunction("USA");
return 0;
}
// Sweden // India // Norway // USAA parameter with a default value, is often known as an " optional parameter ". From the example above, country is an optional parameter and "Norway" is the default value.