I could Use your help in with writing the C$++$ code for. The only library is the iostream library $!$

Here's the scenario:

Your little sibling needs your help with checking his$/$her solutions of a ton of math expressions, which are made up of single digits $(0,1,...,9),$ arithmetic operators $("+","-","*","/")($integer division$),$ and $"\%"($mod$)),$ and brackets $("()","[]",$ and $"\{\}",$ but you'd like to save more time to have fun. For your cute and helpless sibling's sake, please use what you learned to help him$/$her out!

Note: for all questions below you may leverage the code given in class or STL containers. Your code should expect and produce C$-$style string expressions $($e$.$g$.,$ char$[])$ that terminate with $\text{'}\backslash 0\text{'}.$

a$)$ First, you may want to make sure that the handwritten expressions that your sibling copied from the board in class are valid $($you don't want to get confused by his$/$her silly writing mistakes$).$

$-$an expression is valid if:

$-$All the brackets are balanced. That is$,$ each left$/$right bracket can be paired with a right$/$left one in the same style. For instance, a left parenthesis $"("$ can be paired with a right one"$)",$ and a right square bracket $"]"$ can find a corresponding left one $"[",$ and so on$.$ There is no single bracket left alone. The appearance order of different types of brackets does not matter, that is$,$ say, parentheses can include square brackets $("([])")$ or be included by square brackets $("[()]"),$ and so on$.$

$-$Within each pair of brackets, there is only one operator for two operands $($e$.$g$.,"(3+5)"),$ but each operand may also be an expression in a pair of parentheses $($e$.$g$.,"[1+(2*3)]").$

Let's write a function checkValid to do that. It will return a Boolean value "True" if the expression is valid, or "False" otherwise.

$-$Function signature: bool checkValid$($char exp$[])$

$-$Example $1$: $-$Input: exp$="\{1+[(2+3)*(4*5)]\}"$

$-$Output: True

$-$Example $2$: $-$Input: exp$=\text{'}[1+\{(2+3)*\})",$ Output: False