відповідь: function showresult(choise){
var n1=parsefloat(document.getelementbyid('num1').value);
var n2=parsefloat(document.getelementbyid('num2').value);
var r;
var c=choise;
switch(c)
{
case '1':
r=n1+n2;
break;
case '2':
r=n1-n2;
break;
case '3':
r=n1*n2;
break;
case '4':
r=n1/n2;
break;
case '5':
r=n2*100/n1;
break;
default:
break;
}
document.getelementbyid('result').value=r;
}
calculator
my calculator first number second number result+
-
*
/
%
пояснення:
begin
writeln('Введите количество учеников в классе');
read(n);
growth_girls := 0;
growth_boys := 0;
count_boys := 0;
count_girls := 0;
for i := 1 to n do
begin
read(growth);
if (growth < 0) then
begin
growth_boys := growth_boys - growth;
count_boys := count_boys + 1;
end
else
begin
growth_girls := growth_girls + growth;
count_girls := count_girls + 1;
end;
end;
if (count_boys = 0) then
writeln('В классе нет мальчиков')
else
writeln('Средний рост мальчиков: ', (growth_boys / count_boys):0:2);
if (count_girls = 0) then
writeln('В классе нет девочек')
else
writeln('Средний рост девочек: ', (growth_girls / count_girls):0:2);
end.