Exercise #$1$: Selection and Pre$-$defined functions

Write a C$++$ program that computes the value of the following function $F.$ Use double for the argument $x$ and for the computed value of the function. $($Hint: use the pre$-$defined functions from cmath library: pow, sqrt$,$ exp and $\frac{?}{abs})$

$F(x)=\{\begin{array}{cc}\sqrt[\phantom{2}]{x^3+x^2+x},& x>0\\ e^{|x|},& x0\end{array}$

Sample input$/$output:

Fnter the fuction parameter x: $5$ The value of the fuction for $x=5$ is : $12\mathrm{.}4499$

Finter the fuction parameter $x$:$-2$

The value of the fuction for $x=-2$ is : $7\mathrm{.}38906$