Introduction to Arrays in Programming (Pascal) PDF

INTRODUCTION TO ARRAYS IN PROGRAMMING (PASCAL) What is an array: basically it is a holding position in memory similar to that of a variable. The difference is that it has compartments called elements. Each element has an index number starting with 1. Demo drawing looks like this 1...

INTRODUCTION TO ARRAYS IN PROGRAMMING (PASCAL) What is an array: basically it is a holding position in memory similar to that of a variable. The difference is that it has compartments called elements. Each element has an index number starting with 1. Demo drawing looks like this 1 2 3 4 5 6 7 The name of the is written above the drawing to the left. This array has seven elements. Note: the contents of each element are of the same type. If you declare the array as of type integer, then only integers can be placed in each element. How do you declare an array: : ARRAY[1..n] of {Pascal} To apply this to the above array pseudocode: Marks : an array (1..7) of type integer Pascal: Marks:array[1..7] of integer In the following tasks each one will be written in pseudocode then in Pascal 1- To add data to a specific element (e.g. index 4) Marks(4) ²65 Marks:=65; 2- To Add to the value in a specific element {Add 38 to Marks} Marks(6)²Marks(6)+38 Marks:=Marks+38; 3- To subtract from the value in a specific element {subtract 38 from Marks} Marks(6)²Marks(6)-38 Marks:=Marks-38; Note that No.s 2 & 3 are updates 4- To replace the value in one element with the value in another Marks(2)²Marks(7) Marks:=Marks; {Read ‘replace the value in Marks with the value in Marks} 5- To update element 3 by 5% Marks(3)²Marks(3)+Marks(3) x 0.05 Marks:=Marks+Marks * 0.05;  Same pattern holds if you want to decrease the value; just change + to - 6- To allow the user to input values in a single element Get Marks(2) Readln (Marks); 7- To display the contents of a single element Print Marks(7) Writeln (Marks); 8- To allow the user to input data in all elements, you need a For / While loop For index = 1 to 7 do For index = 1 to 7 do Get Marks(index) Readln (Marks[index]); index²1 index:=1; While index