Suppose that you have the following declaration: stack Type stack(50); double num; and the input is
25 64-3 6.25 36-4.5 86 14 -129
Write a C++ code that processes this input as follows: If the number is non-negative, it pushes the square root of the number onto the stack; otherwise it pushes the square of the number onto the stack. After processing these numbers write a C++ code that outputs the elements of the stack.

Explanation:

The code is written in C++:

#include <iostream>

#include <stack>

#include <math.h>

#include <iomanip>

using namespace std;

/*

* Supporting method to print contents of a stack.

*/

void print(stack<double> &s)

{

if(s.empty())

{

cout << endl;

return;

}

double x= s.top();

s.pop();

print(s);

s.push(x);

cout << x << " ";

}

int main(){

// Declaration of the stack variable

stack<double> stack;

//rray with input values

double inputs[] = {25,64,-3,6.25,36,-4.5,86,14,-12,9};

/*

* For each element in the input, if it is positive push the square root into stack

* otherwise push the square into the stack

*/

for(int i=0;i<10;i++){

if(inputs[i]>=0){

stack.push(sqrt(inputs[i]));

}else{

stack.push(pow(inputs[i],2));

}

}

//Print thye content of the stack

print(stack);

}

OUTPUT:

5     8     9     2.5     6     20.25     9.27362     3.74166     144     3

Process exited after 0.01643 seconds with return value 0

Press any key to continue . . . -

answer: b

explanation:

the answer is d underlined.