циклы, найти суммы всех целых чисел от 100 до 500 на с++

Question

Алиса · Accepted Answer

#include using namespace std; int main() { long sum, max = 500, min = 100, start; sum = 0; start = max; while (start >= min) sum += start--; cout << " 1 var: sum = " << sum << endl; sum = 0; start = max; do sum += start; while (--start >= min); cout << " 2 var: sum = " << sum << endl; sum = 0; for (start = min; start <= max; ++start) sum += start; cout << " 3 var: sum = " << sum << endl; sum = 0; for (start = max; start >= min; --start) sum += start; cout << " 4 var: sum = " << sum << endl; cin.get(); return 0; }

Сашуля · Answer

int sum=0, i;
for ( i=100; i<=500; i++)
Sum+=i; 
cout<<sum;
getch();