# You are given an array of 20 elements, filled with random numbers ranging from -10 to +10.

June 30, 2021 | education

| **You are given an array of 20 elements, filled with random numbers ranging from -10 to +10. Swap odd and even elements and display them on the screen.**

program zz1;

const n = 20; // set the number of elements in the array

var i, s: integer; // set variables of integer type

m: array [1..n] of integer;

begin

for i: = 1 to n do // get n random numbers and write them into an array

m [i]: = random (21) -10;

for i: = 1 to n do // display the original array on the screen

write (m [i], ”);

writeln; // go to a new line to display the response

for i: = 1 to n-1 do

begin

if i mod 2 = 1 then begin s: = m [i]; m [i]: = m [i + 1]; m [i + 1]: = s; end;

end;

for i: = 1 to n do // display the resulting array on the screen

write (m [i], ”);

end.

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