While Numbers from 10 sum until result is 1000-CodePudding

Hello my currenct code is doing sum on numbers after including 10 I need it only after, now is doing like 10 10 = 20 then 20 11 = 31 and etc which is wrong, when I change my i with 11 it adds 1 more interaction to the correct and makes the number more than 1000.


``  `
            int i = 10;
            int a = 10;

            while (a < 1000)
            {
                a  = i  ;
            }

            Console.WriteLine(a);
            Console.WriteLine(i);



Tried to change the numbers to 11 which is correct but gives me 1 more interaction which I want to remove!

CodePudding user response：

sorry, do you mean to increment only by 10 ?, you can change a = i ; to a = i;

CodePudding user response：

Solution:

            int i = 11;
            int a = 10;

            while (a < 1000)
            {
                a  = i  ;
            }

            i -= 1;
            a -= i;

            Console.WriteLine(a);
            Console.WriteLine(i);

CodePudding user response：

So you want to termionate the loop before a gets > 1000. The easiest way is to calculate the new value but not yet assign it to a:

int i = 10;
int a = 10;

while (a < 1000)
{
    int newValue = a   i;
    if (newValue > 1000) break;
    i  ;
    a = newValue;
}

Console.WriteLine(a);
Console.WriteLine(i);

Alternative: you could also modify the while condition. As you know you are going to add i, check if the result would be still <= 1000:

while (a   i <= 1000)
{
    a  = i  ;
}

Alternative 2: Another strategy proposed in @Slepcho's comment is to undo the last addition after the loop:

while (a <= 1000) 
{ 
    a  = i  ; 
}
a -= --i;