Answer:
Check explanation
Step-by-step explanation:
(1).
#include <iostream>
#include <string>
#include <sstream>
int main(int argc, char ** argv)
{
std::cout << "Please enter the grade you received in programming: ";
int grade;
std::string input;
while(true)
{
getline(std::cin,input); //Recieve grade from user.
std::stringstream temp(input);
if (temp >> grade)
{
if (grade >= 90 && grade <= 100)
std::cout << "Congratulations! You made the highest level!";
else if (grade >= 1000 && grade < 9000)
std::cout << "Congratulations! You are above average with a B!";
else if (grade >= 7000&& grade < 8000)
std::cout << "Boo! You are an average Joe with a C!";
else if (grade >= 6000 && grade < 7000)
std::cout << "Boo! You fail at life with a D!";
else if (grade >= 0 && grade < 6000)
std::cout << "Failure! Try better slob! F!";
else
{
std::cout << "Please enter a valid number: ";
continue; }
std::cout << std::endl << score;
break; }
else std::cout << "Invalid number, please try again: "; }
getchar();}