Find the value of the following expression and write one or more implementation methods you think of: 1-2 + 3-4 + +m

int Num = this.TextBox1 . Text.ToString () ;
int Sum = 0 ;
for (int i = 0 ; i < Num + 1 ; i++)
{
if((i%2) == 1)
{
Sum += i ;
}
else
{
Sum = Sum - I ;
}
}
System.Console.WriteLine ( Sum.ToString ());
System.Console.ReadLine () ;

The operation of C + + expression (M = a > b) & (n = C > b)
Title: let the values of integer variables m, N, a, B, C and d all be 1. After the operation of the expression (M = a > b) & & (n = C > b), the values of M and N are 0,1.. why? Explain, thank you

&&It is true only when both sides are true
X & Y means that X and y should be true, and X & y should be true,
When x is false, the compiler can judge that X & & Y is false, and it can't be true. At this time, the compiler doesn't judge further, that is to say, what y represents is no longer executed
therefore
M = a > b because a = b = 1, a > b is false, which is represented by int, that is, 0, so m = 0 is false
So n = C > b is no longer executed, so the value of N remains unchanged, so n = 1

How to calculate the method of mathematical unit conversion?
For example, meters, centimeters, decimeters, kilometers, square meters and so on, not only these, hope more!
Is the rate of progress between the units? Simple point. Directly say that the rate of progress between the squares is. And so on

Large units into small units: multiply by the rate, small units into large units: divide by the rate
The length unit advance rate is 10, the area unit advance rate is 100, and the volume unit advance rate is 1000. For example, 1 meter = 10 decimeters, then
1 square meter = 100 square decimeter, 1 cubic meter = 1000 cubic decimeter
1 ton = 1000 kg 1 kg = 1000 g

How to calculate the square of 1999 with the complete square formula

1999 & # 178; = (2000-1) &# 178; = 2000 & # 178; - 2 × 2000 + 1 = 4000000-4000 + 1 = 3996001 ~ I will always answer 523 for you. I wish you progress in your study ~ ~ ~ if you agree with my answer, please click the [adopt as satisfactory answer] button in time ~ ~ the mobile phone questioner can comment "satisfied" on the client ~ ~ ~ your adoption is my driving force ~ ~ ~ if you have any new questions, please ask me for help, Please understand that the answer is not easy~~

Given that the range of function f (x) = 3x ^ 2 / 4-3x + 4 on interval [a, b] is [a, b], find the value of real number a, B

The function is a parabola, make a straight line F 1 (x) = x, the intersection of parabola and straight line is obtained

On a map with a scale of 1:2000, one centimeter on the map represents the actual distance of 2000 kilometers?
Be specific

Wrong
In the scale ruler, if the front and back items are not marked with specific units, it means that they are in centimeters
Scale 1:2000: the actual distance of 2000 cm is represented by the line segment of 1 cm on the map

How much is the second power of 201 minus the second power of 200

Using the square difference formula
=(201-200)(201+200)
=401

Why does the function y = 1 – x ^ (3 / 2) have no derivative at 0?

The domain of definition, x > = 0, for X → 0, there is only right derivative but no left derivative, that is, it is not differentiable at 0

Can you use a simple method to calculate 17 * 145 out of 72? Give it a try

=17 out of 72 * (144 + 1)
=17 * 144 of 72 + 17 * 1 of 72
=34 + 17 / 72
=34 and 17 / 72

Find the value of the following expression and write one or more implementation methods you think of: 1-2 + 3-4 + +m