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// Example 4.2
// The program requests the user to enter a character and display a message on
// the screen telling the user whether the character is an alphabet or digit,
// or any other special character.
disp("Press any key");
character=scanf("%c"); //Reading character
if (isletter(character)) then //Test for letter
disp("The character is a letter");
elseif (isdigit(character)) then //Test for digit
disp("The character is a digit");
else
disp("The character is not alphanumeric");
end
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