Question

Чему будет равно значение переменной x после выполнения фрагмента программы x:=0 for i:=-5 to 0 do n:=i*i; x:=x+n 100БАЛОВ

Answer 1

N=-5*-5=25
n=-4*-4=16
n=-3*-3=9
n=-2*-2=4
n=-1*-1=1
n=0*0=0
x=25+16+9+4+1+0=55

Answer 2

Calculating the Value of Variable x

To calculate the value of the variable x after executing the given program fragment, we can break down the code step by step.

1. Initialization: - The variable x is initialized to 0: `x := 0`.

2. Loop Execution: - The loop iterates over the values of i from -5 to 0. - For each iteration, the value of n is calculated as the square of i: `n := i * i`. - Then, the value of x is updated by adding n and 100: `x := x + n + 100`.

3. Calculation: - For i = -5, n = (-5) * (-5) = 25, so x = 0 + 25 + 100 = 125. - For i = -4, n = (-4) * (-4) = 16, so x = 125 + 16 + 100 = 241. - For i = -3, n = (-3) * (-3) = 9, so x = 241 + 9 + 100 = 350. - For i = -2, n = (-2) * (-2) = 4, so x = 350 + 4 + 100 = 454. - For i = -1, n = (-1) * (-1) = 1, so x = 454 + 1 + 100 = 555. - For i = 0, n = 0 * 0 = 0, so x = 555 + 0 + 100 = 655.

Therefore, the value of the variable x after executing the given program fragment will be 655.