Var a,b:integer;
begin
write('a = '); readln(a);
b:=(a div 100)*100 + (a mod 10)*10 + (a div 10 mod 10);
writeln('b = ',b);
end.
Пример:
a = 123
b = 132
Var s,n: integer;
begin
read(n);
s:=0;
for var i := 1 to n do if i mod 2 <> 0 then s:=s+1;
writeln(s);
end.
#include <iostream>
using namespace std;
int main () {
int a, b;
cin >> a;
for (b = 1; b <= a; b++ ){
if ( b % 2 == 0){
cout << b << endl;
}
}
}