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- #include <iostream>
- #include <thread>
- #include <chrono> // this is required header file to use the high_resolution_clock class
- #include <algorithm>
- using namespace std;
- using namespace chrono;
- typedef unsigned long long ull;
- ull oddSum = 0;
- ull evenSum = 0;
- void findEven(ull start, ull end)
- {
- for (ull i = start ; i <= end; ++i)
- {
- if((i%2)== 0)
- {
- evenSum = evenSum + i;
- }
- }
- }
- void findOdd(ull start, ull end)
- {
- for (ull i = start; i <= end ; ++i)
- if(( i % 2) != 1)
- {
- oddSum = oddSum+i;
- }
- }
- int main()
- {
- ull start = 0; ull end = 1900000000;
- auto startime = high_resolution_clock::now(); // your time start now.
- findEven(start, end);
- findOdd(start, end);
- auto stoptime = high_resolution_clock::now(); // Time up .
- auto duration = duration_cast<microseconds>(stoptime - startime); // total time in microseconds
- cout << "Odd Sum : " << oddSum << endl;
- cout << "even sum : " << evenSum << endl;
- cout <<"Total time taken : " << duration.count()/1000000 << endl;
- return 0;
- }
- /*
- output :
- Odd Sum : 902500000950000000
- even sum : 902500000950000000
- Total time taken : 8
- Program ended with exit code: 0
- */
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