Operators

Question 1

State the 4 types of operators.

Answer 1

• Arithmetic Operators
• Relational Operators
• Logical Operators
• Bitwise Operators

Question 2

What are all the types and functions of arithmetic operators?

Answer 2

• “*” (Multiplication)
• / (Division) would give integer value of input is both int
• ”+” (Addition)
• ”-“ (Subtraction)
• “&” (Modulus) takes the remainder of result

Question 3

What are predefined math functions?

Answer 3

• The following pre-processor directive must be included in your program to direct the compiler to include the cmath header file. # include < cmath >
• pow (x,no.) – to raise a number to a power
• sqrt (x) – to compute the square root of a number
• sin – to compute the sine of an angle
• log – to compute the natural logarithm of a number.. etc

Question 4

What are logical operators?

Answer 4

• && (AND)
• || (OR)

Question 5

What are relational operators?

Answer 5

• > (greater than)
• > = ( greater or equal to )
• < (lesser than)
• <= (lesser or equal to)
• == (equal to)
• != (not equal)
• (+) / - / (/) / * = (e.g j*=2 => j = j * 2

Question 6

How to set decimal places and number of digits in my output?

Answer 6

• # include < iomanip >
• cout &laquo_space;statement block
• &laquo_space;fixed &laquo_space;setprecision(no of decimal place)
• &laquo_space;right &laquo_space;setw(number of digits)