Question and Answer

Question and Answer

Q1. What is the difference between a constant and a variable?
A The major difference is that the value of a constant cannot be changed, while the value of a variable can. You can assign different values to a variable whenever it's necessary in your C program.

Q2. Why do you need a statement block?
Ans. Many C keywords can only control one statement. A statement block provides a way to put more than one statement together and put the statement block under the control of a C keyword. Then, the statement block is treated as a single statement.

Q3. Which arithmetic operators have a higher precedence?

Ans. Among the five arithmetic operators, the multiplication, division, and remainder operators have a higher precedence than the addition and subtraction operators.

Q4. How many parts does a function normally have?

Ans. A function normally has six parts: the function type, the function name, the arguments, the opening brace, the function body, and the closing brace.

14 views

The if-else Statement

The if statement

The if statement

If life were a straight line, it would be very boring. The same thing is true for programming. It would be too dull if the statements in your program could only be executed in the order in which they appear.

Mathematical Functions in C

Mathematical Functions in C

Basically, the math functions provided by the C language can be classified into three groups:

Trigonometric and hyperbolic functions, such as acos(), cos(), and cosh().

Changing Data Sizes

Changing Data Sizes

Enabling or Disabling the Sign Bit

Enabling or Disabling the Sign Bit

As you know, it's very easy to express a negative number in decimal. All you need to do is put a minus sign in front of the absolute value of the number. But how does the computer represent a negative number in the binary format?

Related Items

The if-else Statement

The if statement

Mathematical Functions in C

Changing Data Sizes

Enabling or Disabling the Sign Bit