Question

Hi please help me with this zybooks question asap. Thanks

4.17 Chapter 4 Program: Sum of Numbers/C++ program

Write a C ++ program that asks the user for a positive integer value by prompting "Enter a positive integer number: ", read in that number, then use a loop to get the sum of all the integers from 1 up to the number entered. For example, if the user enters 50, the loop will find the sum of 1, 2,3, 4…50. It should print "The total of all the integers from 1 to 50 is …"

Input validation: when user enters a invalid number, the program should prompt user "The number cannot be less than one."

Answer 1

#include<iostream>
using namespace std;

int main()
{
   int sum=0,n;
   cout<<"Enter a positive integer number: ";
   cin>>n;
   if(n>=1)
   {
       for(int i=1;i<=n;i++)
       {
           sum=sum+i; //sum of all number
       }
       cout<<"The total of all the integers from 1 to "<<n<<" is "<<sum;

   }
   else
    cout<<"The number cannot be less than one.";

    return 0;
}

nter a positive integer number 50 The total of all the integers from 1 to 50 is 1275 Process returned 0 〈0x0) execution time : 2.975 Press any key to continue.