#define namespace using namespace std;
#define plus +
#define minus - 
#define multiply *
#define divide /
#define modulo %
#define assign =
#define print cout<<
#define enter cin>>
#define endline endl 
#define calc void main()
#define stop system("pause");
#define number int
#define first "Enter first number: "
#define second "Enter second number: " 
#define sign "Enter sign: "
#define result "Result: "
#define start { 
#define end }
#define open (
#define close ) 
#define coma ,
#define semicolon ; 
#define ret return
#define set setlocale(LC_ALL,"ru");
#define begin [
#define rbegin ]
#define numfive 5
#define open1 <<
#define text cout<<"1-додавання\n2-вiднiмання\n3-дiлення\n4-множення\n5-дiлення_по_модулю\nВведiть_вибiр:";
#include <iostream>
namespace
    number sum open number a coma number b close semicolon
    number ris open number a coma number b close semicolon
    number dil open number a coma number b close semicolon
    number mn open number a coma number b close semicolon
    number dilm open number a coma number b close semicolon
    calc start
    set
    number open *p begin numfive rbegin close open number coma number close assign start sum coma ris coma dil coma mn coma dilm end semicolon
    number choice coma a coma b semicolon
    text
    enter choice semicolon
    print first semicolon
    enter a semicolon
    print second semicolon
    enter b semicolon
    number c assign p begin choice - 1 rbegin open a coma b close semicolon
    print result semicolon
    print c semicolon
    stop
    end
    number sum open number a coma number b close start
    ret a plus b semicolon
    end
    number ris open number a coma number b close start
    ret a minus b semicolon
    end
    number dil open number a coma number b close start
    ret a divide b semicolon
    end
    number mn open number a coma number b close start
    ret a multiply b semicolon
    end
    number dilm open number a coma number b close start
    ret a modulo b semicolon
    end