How to write inline function in C++

1. Inline
Functions
Yogendra Pal

2. At the end of this tutorial you will be able to
• Explain how does function call happens in computer memory.
• Explain inline function.
• Explain the difference between inline function and regular function.
• Identify inline functions from a given c++ program.
• Write inline functions in c++ program.
• Explain when a function qualify for inline function.
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3. Function call in detail
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4. Inline Function
• Call to an inline function is replaced by the function code.
• Run faster than regular functions.
• Consume more memory than regular functions.
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5. Inline function creation
• Preface the function declaration with the keyword inline, OR
• Preface the function definition with the keyword inline.
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inline return_type function_name(argument_list);
inline return_type function_name(argument_list)
{
statements;
}
OR

6. Inline Function at Run Time
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inline void function_name(argument_list)
{
statement_1;
statement_2;
}
int main()
{
function_name();
cout << “new line”;
function_name();
}
int main()
{
statement_1;
statement_2;
cout << “new line”;
statement_1;
statement_2;
}
At run time

7. Inline function in Class
• Write function definition inside class declaration to make it inline.
• Make a function inline using inline keyword outside class declaration.
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8. Ask your questions
to learn better
Yogendra Pal
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