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C++ Introduction

bookType of Functions

When creating a function, the data type of the return value must always be specified. In the main function, the return type is declared as int, indicating that it will return an integer value upon completion. In most cases, the main function returns 0 to signify that the program has successfully executed.

main.cpp

main.cpp

copy

              
1234

            
int main()
{
	return 0;
}

Note

Since the main function is reserved in C++, it will always return integer.

Custom functions can return any value, but it's essential to understand that the type of the return value must match the specified return type in the function definition.

custom_function.h

custom_function.h

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1234

            
___ custom_function()
{
    return ___;
}

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SectionΒ 5. ChapterΒ 2

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bookType of Functions

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When creating a function, the data type of the return value must always be specified. In the main function, the return type is declared as int, indicating that it will return an integer value upon completion. In most cases, the main function returns 0 to signify that the program has successfully executed.

main.cpp

main.cpp

copy

              
1234

            
int main()
{
	return 0;
}

Note

Since the main function is reserved in C++, it will always return integer.

Custom functions can return any value, but it's essential to understand that the type of the return value must match the specified return type in the function definition.

custom_function.h

custom_function.h

copy

              
1234

            
___ custom_function()
{
    return ___;
}

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 5. ChapterΒ 2
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