Summary Inline function in c++

Inline Functions in C++

Inline functions are used to reduce the compilation time runtime and make programs faster.
When a function is inline, the compiler places a copy of the specified function's code at each
point where the function is called at compile time. This helps reduce the overhead of control
transfer, which can slow down the program. The syntax for using inline functions is to place the
keyword "inline" before the return type of the function, followed by the function name, and then
the parameters and function definition inside parentheses.

Example:
Here's an example of how to use an inline function in C++. First, define the function using the
"inline" keyword before the return type. In this example, we define a function called "triple" that
takes in a number and returns the triple of that number.

using namespace std;
inline int triple(int num){
return num*3;
}

Then, in the main logic, we can call this function using the function name and passing in a
number. For instance, if we pass in 3, we would expect to get 9 as the output.

int main(){
int result = triple(3);
cout << result << endl;
return 0;
}

Without using inline, the compiler would have to move back and forth between the main logic
and the function definition, which can slow down the program. But with inline, the function
definition is copied into the main logic, reducing the overhead of control transfer and making the
program faster.