C++ program of inline function to display a pattern for a number of rows

Write a C++ program of inline function to display a pattern for a number of rows using a number which will start with the number 1 and the first and the last number of each row will be 1. The pattern is as follows:

C++ to display a pattern for a number of rows

The inline function inline A::T4Tutorials_pattern() helps to increase the execution time of a program. The programmer can make a request to the compiler to make the inline function as inline A::T4Tutorials_pattern() .

Making inline means that compiler can replace the function definitions of inline A::T4Tutorials_pattern() with the place where this function is called obj.T4Tutorials_pattern();.
The compiler replaces the definition of inline functions at compile time instead of referring function definition at runtime.