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Tags: simpsons buddy icon, can t change folder icons, free buttons icons, and life icons, windows xp icons text

R, S: Real; |Begin

Write (' Enter circle radius '); the Press on the screen of the request for input

Readln (R); value Input in variable R from the keyboard

S: = 4*ARCTAN (1) *SQR (R); Calculation of square of a circle (pR2)

Writeln (' the Square of a circle in radius ', R, ' is equal ', S)

End.

This program requests value of radius of a circle of the user, provides possibility to enter its value, calculates and displays the value of square of a circle with such radius. Thus, there is a possibility, without bringing changes in the program text, to enter various values of radius and to receive, values of square of a circle corresponding to them. For this purpose it is enough to start the program some times. Also this program shows a following rule: output of results should be commented so that the sense of the printed out numbers was clear.

Really, after all it would be possible to be limited Writeln (S), but value

The number output by the program in this case it would be clear only to the one who has written this program.

Labels. The unconditional branch operator.

Each house in the street has the number, all people have specific names, even computer storage locations have everyone the address. All it it is accepted to have possibility unambiguously to specify in the defined object. Precisely also, for instructions on operators in programs

Labels are applied.

The label in the language standard of Pascal represents the whole nonnegative number. All labels used in the program should be enumerated in section of the description of the labels, starting syntactic word Label,

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