
????

Aus „Programming: Principles and Practice Using C++“
/*
Exercise is to first define the amount of numbers n beginning from the first
to n in a vector, enter a random set of integer values to a vector and then
sum the amount of n values. Checks to prevent out of range errors must be implemented.
*/
#include "std_lib_facilities.h"
using namespace std;
void checkvecsize (unsigned long vecsize, int n)
{
if (n>vecsize)
error("Youw ant to sum more value than are available!\n"); // Check if vector size is enough.
}
int main ()
try
{
int n;
cout << "Please enter the number of values:\n";
cin >> n;
bool stop = 0; // to keep the while loop going until told otherwise
vector<int> numbers;
int values{};
int sum = 0;
string value_check;
cout << "Please enter a couple of number. Press s to stop! \n";
while(!stop)
{
if(cin>>values)
numbers.push_back(values);
else
{
cin.clear();
cin >> value_check;
if (value_check=="s") // by pressing s the while loop stops.
stop = 1;
else
error("Use only numbers or (s) to stop");
}
}
checkvecsize(numbers.size(), n);
for (int i=0; i<n; i++)
{
sum = sum + numbers[i];
}
cout << "The sum of the first " << n << " values = " << sum << "!\n";
}
catch(runtime_error e)
{
cout << e.what() << '\n';
}
catch (...)
{
cout << "Exiting with unknown error" << '\n';
}
Maren und ich haben wieder miteinander gesprochen und daraus wurde die 43. Folge Sachsennaht. Einmal querbeet durch die Themen Covid19, Sachsen, Gedenken an den Anschlag von Halle und linke Hausprojekte. Etwas länger als sonst, enjoy!