Mathematical Operators in Delphi

What is the result of 10 mod 3?

• 2

• 0

• 1

• 3

How do you use the div operator in Delphi?

• Use the div operator for integer division in Delphi.

• Use the div operator for floating-point division in Delphi.

• The div operator is used for string concatenation in Delphi.

• You cannot use the div operator in Delphi.

What function would you use to generate a random number?

• Math.generateRandom()

• Math.random()

• Math.getRandom()

• Math.randomize()

What is the square root of 16?

• 6

• 3

• 5

• 4

How can you round the number 5.7 in Delphi?

• Round(5.7) returns 5.5

• Round(5.7) returns 6

• Round(5.7) returns 7

• Round(5.7) returns 5

What is the purpose of the modulus operator?

• To find the remainder of a division operation.

• To determine if a number is even or odd.

• To convert a number to a string.

• To calculate the average of two numbers.

Explain the difference between local and global variables.

• Local variables persist for the entire duration of the program.

• Global variables are only used within a single function.

• Local variables are scoped to a function; global variables are accessible throughout the program.

• Local variables can be accessed anywhere in the program.

How do you format a variable to a different data type in Delphi?

• Assign values directly without conversion

• Use type casting functions like IntToStr, StrToInt, FloatToStr, StrToFloat for formatting variables to different data types.

• Use the 'Convert' method for all data types

• Use string concatenation for type changes

What is the result of 15 div 4?

• 5

• 4

• 3

• 2

How can you retrieve a variable's value in Delphi?

• Call a function to get the variable's value.

• Access the variable through a pointer.

• Use the variable name directly to retrieve its value.

• Use the variable's address to retrieve its value.