Определите значение переменной n, которое будет получено в результате выполнения следующей программы:
var s, i, j: integer;
begin s:= 0;
for i:=1 to 2 do
for j:=i to 4 do
s:=s+2*i-j;
writeln (s)
end.
var s, i, j: integer;
begin s:= 0;
for i:=1 to 2 do
for j:=i to 4 do
s:=s+2*i-j;
writeln (s)
end.
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Ответ:
1
Объяснение:
i = 1 j = 1 s = 0
s = 0 + 2 * 1 - 1 = 0 + 2 - 1 = 1
i = 1 j = 2 s = 1
s = 1 + 2 * 1 - 2 = 1 + 2 - 2 = 1
i = 1 j = 3 s = 1
s = 1 + 2 * 1 - 3 = 1 + 2 - 3 = 0
i = 1 j = 4 s = 0
s = 0 + 2 * 1 - 4 = 0 + 2 - 4 = -2
i = 2 j = 2 s = -2
s = -2 + 2 * 2 - 2 = -2 + 4 - 2 = 0
i = 2 j = 3 s = 0
s = 0 + 2 * 2 - 3 = 0 + 4 - 3 = 1
i = 2 j = 4 s = 1
s = 1 + 2 * 2 - 4 = 1 + 4 - 4 = 1