Question

How to calculate the sum of numbers from 1 to N in C++

Answer 1

#include <iostream>

int main()
{
   int sum = 0, N = 50;

   for(int i = 1; i <= N; i++) {
      sum += + i;
   }
   
   std::cout << "sum: " << sum;
   
   return 0;
}




/*
run:

sum: 1275

*/

 

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