Integers

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Types of integers are : integer, byte, word, longint, shortint.

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Declaring Integers.

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program int1;
var
      a:integer;
      b:byte;
      c:word;
      d:shortint;
      f:longint;
begin
  a:=1;
  b:=2;
  c:=3;
d:=4;
f:=5;
writeln('a = ',a);
writeln('b = ',b);
writeln('c = ',c);
writeln('d = ',d);
writeln('f = ',f);
end.

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Reading integers from keyboard.

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program int2;
var
a,b,c:integer;
begin
writeln('Key in a = ');
readln(a);
writeln('Key in b = ');
readln(b);
writeln('Key in c = ');
readln(c);
writeln('a = ',a);
writeln('b = ',b);
writeln('c = ',c);
end.

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Operations using integers.

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1.Addition

2.Subtraction

3.Multiplication

4.Division

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program int3;

var
a,b,c:integer;
begin
writeln('Key in a = ');
readln(a);
writeln('Key in b = ');
readln(b);
writeln('Key in c = ');
readln(c);
writeln(a,' + ',b,' = ',a+b);
writeln(a,' - ',b,' = ',a-b);
writeln(a,' * ',b,' = ',a*b);
end.

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Integer Division

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Integer division is expressed using DIV.

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program int6;
var
a,b:integer;
begin
writeln('Give 2 integers: ');
readln(a,b);
writeln(a,' DIV ',b,' = ', a div b);
end.

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The Modulus

The quotient of integer division: MOD

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program int7;

var
a,b:integer;
begin
writeln('Give 2 integers: ');
readln(a,b);
writeln(a,' MOD ',b,' = ',a mod b);
end.

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