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Apprendre Default | Functions
C++ Intermediate | Mobile-Friendly
course content

Contenu du cours

C++ Intermediate | Mobile-Friendly

C++ Intermediate | Mobile-Friendly

1. Data Types and Arrays
2. References & Pointers
3. Dynamic Memory
4. Functions

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Default

During the function definition, you can set default values for the last parameters. For example, you want to print the country the user is from, but if you don't have this information, there is a way to print the default value ("Canada"):

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void myFunc(string name, string country = "Canada") { &nbsp;&nbsp;&nbsp;&nbsp;cout << name << " is from " << country << endl; } int main() { &nbsp;&nbsp;&nbsp;&nbsp;// Call the function to be executed &nbsp;&nbsp;&nbsp;&nbsp;myFunc("Ted", "USA"); &nbsp;&nbsp;&nbsp;&nbsp;myFunc("Robin"); &nbsp;&nbsp;&nbsp;&nbsp;return 0; }
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Here by the second function call, we don’t know the country Robin is from, so the function myFunc() used the default value for the country - Canada.

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Set the defualt value of age equal to 20:

myFunc(string name, int)

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Section 4. Chapitre 5
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