Introduction to Array On Pascal Programming (Array 1 Dimension)

**Example we have 5 integer variables:

var a1,a2,a3,a4,a5:integer; begin a1:=2; a2:=3; a3:=5; a4:=7; a5:=11; writeln(a1); writeln(a2); writeln(a3); writeln(a4); writeln(a5); readln end.

If the program is run then will be appear: 2 3 5 7 11

Writing for program above can be written simpler using a varible typed "array":

var a:array[1..5] of integer; begin a[1]:=2; a[2]:=3; a[3]:=5; a[4]:=7; a[5]:=11; writeln(a[1]); writeln(a[2]); writeln(a[3]); writeln(a[4]); writeln(a[5]); readln end.

If the program is run then will be appear: 2 3 5 7 11

**Example we have program to input 5 integers using 5 integers variables:

var a1,a2,a3,a4,a5:integer; begin write('input number to-1! '); readln(a1); write('input number to-2! '); readln(a2); write('input number to-3! '); readln(a3); write('input number to-4! '); readln(a4); write('input number to-5! '); readln(a5); writeln('number to-1 is inputted is: ',a1); writeln('number to-2 is inputted is: ',a2); writeln('number to-3 is inputted is: ',a3); writeln('number to-4 is inputted is: ',a4); writeln('number to-5 is inputted is: ',a5); readln end.

If the program is run then will be appear: input number to-1! 7 input number to-2! 1000 input number to-3! 23 input number to-4! 114 input number to-5! 789 number to-1 is inputted is: 7 number to-2 is inputted is: 1000 number to-3 is inputted is: 23 number to-4 is inputted is: 114 number to-5 is inputted is: 789

Writing for program above can be written simpler using a variable typed "array" and a variable typed integer;

var   a:array[1..5] of integer;   b:integer; begin for b:=1 to 5 do begin   write('input number to-',b,'! ');   readln(a[b]); end; for b:=1 to 5 do   writeln('number to-',b,' is inputted is: ',a[b]); readln end.

If the program is run then will be appear: input number to-1! 7 input number to-2! 1000 input number to-3! 23 input number to-4! 114 input number to-5! 789 number to-1 is inputted is: 7 number to-2 is inputted is: 1000 number to-3 is inputted is: 23 number to-4 is inputted is: 114 number to-5 is inputted is: 789

With array we can write program in simpler code.. :)

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