How to solve this exercise? And explanation

Question

The program you are given takes a positive number N as input.
Complete the program to calculate the sum of all numbers from 1 to N inclusive.

Sample Input
4

Sample Output
10
IN C#
https://www.sololearn.com/discuss/2669866/?ref=app

Answer 1

Carlos

This is so simple. Just start loop with index 1 and add index values.

int sum = 0;

for(int i = 1; i <= N; i++) {
sum += i;
}

Answer 2

i is simple a new variable/counter for the for loop.

for (init; condition; increment)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int N = Convert.ToInt32(Console.ReadLine());
int sum = 0;

//your code goes here

for (int x = 1; x <= N; x++ )
{
sum = sum + x;
}
Console.WriteLine(sum);

}
}
}

Answer 3

thanks for the reply, just one question, its “i” and arbitrary name or when do you ise it?

Answer 4

Wow, how simple is that! I've been wondering too much on this...

Answer 5

I've managed to solve it too!
It was kinda rough though!

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int N = int.Parse(Console.ReadLine());
int sum = 0;

//your code goes here
for(int x = 1; x <= N; x++)
{
sum += x;
}

Console.WriteLine(sum);
}
}
}