Question

C++

Write a program that prompts the user to enter integers or a sentinel to stop. The program prints the highest and lowest numbers entered, the sum and the average. DO NOT USE ARRAYS, only variables and loops. Write a program the prompts the user to input a positive integer. Keep asking the user until a positive integer is entered. Once a positive integer is entered, print a message if the integer is prime or not. (NOTE: A number is prime if it is even and 2. If a number is odd, it is prime if it is not divisible by any odd integer less than or equal to the square root of the number. What header file will you need include to use the sqrt() function?)

Answer 1

[1]

#include <iostream>
using namespace std;

int main(){
int input,sum = 0,max,min,counter=1;
float average = 0.0;
  
cout << "Enter integers : " ;
cin>>input;
cout <<input<<endl;
  
max = input;
min = input;
  
while(input != -1){
sum = sum + input;  
  
if(min > input){
min = input;
}
  
if(max < input){
max = input;
}

cout << "Enter integers : " ;
cin>>input;
cout <<input<<endl;
counter = counter + 1;
}
  


average=sum/(counter -1);
  
cout << "Min Value" << " is " << min << endl;
cout << "Max Value " << " is " << max << endl;
cout << "The sum of " << " is " << sum << endl;
cout << "The average of " << " is " << average << endl;
}

==============================================================================

[2]

#include <iostream>
using namespace std;

int main(){
int input,i;
bool isPrime = true;
  
cout << "Enter a positive integer: ";
cin>>input;
cout <<input<<endl;
  
while(input >= 0 ){
isPrime = true;
for(i = 2; i <= input / 2; ++i)
{
if(input % i == 0)
{
isPrime = false;
break;
}
}
  
if (isPrime)
cout << "This is a prime number";
else
cout << "This is not a prime number";

cout << "\n\nEnter a positive integer: ";
cin>>input;
cout <<input<<endl;
}

}