1)
program fantscrin;
var s:string; i, plus, minus:integer;
begin
write('Введите строку:'); readln(s);
plus:= 0;
minus:= 0;
for i:=1 to length(s) do
begin
if s[i] = '+' then plus := plus + 1;
if s[i] = '-' then minus := minus + 1;
end;
writeln;
if plus > minus then for i:=1 to plus do
write('+')
else if plus < minus then for i:=1 to minus do
write('-')
else write('Кол-во знаков одинаковое!');
end.
2)
program fantscrin;
var y,x,b,e:real; i:integer;
begin
write('Введите число b:'); readln(b);
e:= 2.7;
x:= 0;
writeln;
writeln(' y | x ');
writeln('');
while x <= 10 do
begin
if x < 3 then
begin
y:= Exp(x * Ln(e)) + 1 / (x + 1);
writeln(y:6:5, ' | ', x:6:5)
end;
if x = 3 then
begin
y:= Sin(x) + sqrt(x);
writeln(y:6:5, ' | ', x:6:5);
end;
if x > 3 then
begin
y:= Cos(x) + Abs(b);
writeln(y:6:5, ' | ', x:6:5);
end;
x:= x + 0.5;
end;
end.
not(a) and (b or not(c))
Код на Python:
for a in range(0,2):
for b in range(0,2):
for c in range(0,2):
f=not(a) and (b or not(c))
print('A = ',a,'B = ',b,'C = ',c,'F = ',f)
б) А и не ( В и или не С) получим такое выражение:
a and (b or not(c))
Код на Python:
for a in range(0,2):
for b in range(0,2):
for c in range(0,2):
f=a and (b or not(c))
print('A = ',a,'B = ',b,'C = ',c,'F = ',f)
в) не ( не А или В и С) преобразуем:
a and (b or c)
Код на Python:
for a in range(0,2):
for b in range(0,2):
for c in range(0,2):
f=a and (b or c)
print('A = ',a,'B = ',b,'C = ',c,'F = ',f)