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Assignment:Create a class named SafeStack that implements a stack of strings. Use an instance of stack from <string> to hold string values and implement the same interface as the data type. However, your implementation (class) should throw an exception if an attempt is made to remove a value from an empty stack. #include <stack>#include <string>#include <iostream>#include <stdexcept>using namespace std;class FutureValueError{public: FutureValueError(const string& r); string& what();private: string reason; }; FutureValueError::FutureValueError(const string& r): reason(r) { } string& what() { return reason; }class SafeStack{ public: SafeStack(); void push(string str); string top(); void pop(); int size(); bool empty(); private: stack<string> stk;};SafeStack::SafeStack(){}void SafeStack::push(string str){ stk.push(str);}string SafeStack::top(){ if(stk.empty()) throw FutureValueError ("stack is empty!"); else return stk.top();}void SafeStack::pop(){ if(stk.empty()) throw FutureValueError ("stack is empty!"); else stk.pop();}int SafeStack::size(){ return stk.size();}bool SafeStack::empty(){ return stk.empty();}int main (){ SafeStack mystack; try { mystack.pop(); } catch (FutureValueError& e) { cout << "Caught exception: " << e.what() << "n"; } return 0;}
Given a double variable called dval, write a single Java statement to prompt the user to enter the price of an item using JOptionPanes, convert the result and store it into dval.
Write a function called "problem3" that accept ONE input. This single input will be formatted as follows: Row 1: X coordinates Row 2: Y coordinates Your function should then shift the shape
Write a 2 page research paper (excluding the title page) on logical, circular, and arithmetic shift operations. Use an example not discussed in the textbook to explain these shift operations.
Choose one of special walks: Euler circuit, Hamiltonian cycles, or shortest path tree. Provide an example of how the walk can be used to identify an issue on a network or to solve a routing problem.
letterCount(letter, myString) This function should take a single letter, and then a string. It should return the number of times letter occurs in myString. So the call letterCount('h', 'hello') should return 1, and the call letterCount('a', 'aa..
This paper is centered around some results obtained from the Human and Nature Dynamics (HANDY) model. This model is equation 3 in their paper.
Suppose a computer using direct mapped cache has 2^32 words of main memory and a cache of 1024 blocks, where each cache block contains 32 words. How many block of main memory are there?
Write the function Xsort wich takes in a list of strings and returns sorted list with all words beginning wih "X" first in the list. f.ex: xsort (['kex', 'xylofonn', 'epli', 'xenos', 'asni']) returns ['xenos', 'xylofonn', 'asni', 'epli', 'kex'] th..
Reverse the string. If the reversed string is the same (.equals()) as the original, pared down, string then it is a palindrome.Way 2: Look at the first and last letter and see if they are the same (using the charAt() method), then the second letter ..
1. What are the risks associated with throwing out old information systems and replacing them with new information systems? Provide examples to support your answer.
Define a class to represent time, in military format. Your class should have three private data members.
In MIPS Assembly language
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