30 lines
779 B
C++
30 lines
779 B
C++
#include<iostream>
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#include<conio.h>
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#include<sstream>
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#include<string>
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int main ()
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{
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long long start=0, end=0;
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std::string input;
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std::cout << "Geben sie den Startwert ein: ";
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getline(std::cin, input);
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std::stringstream(input) >> start;
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std::cout << "\nGeben sie den Endwert ein: ";
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getline(std::cin, input);
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std::stringstream(input) >> end;
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std::cout << "\n";
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if(start<end) for(int idx = start; idx<end; idx++) std::cout << idx << ", ";
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else for(int idx = start; idx>end; idx--) std::cout << idx << ", ";
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std::cout << end << "\n\nDie Summe der natuerlichen Zahlen von " << start << " bis " << end << " betraegt: ";
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if(start<end) std::cout << (end*(end+1)-start*(start-1))/2;
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else std::cout << (end*(end-1)-start*(start+1))/2;
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getch();
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return(0);
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}
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