Absolute Beginner's Guide to Programming, Second Edition

Declaring Variables

Keeping in mind that no string variables exist in C, declaring variables in C is about as simple as declaring them in Visual Basic. Consider the following section of a main() function:

main()
{
  char initial;
  mt age;
  float amount;

This code declares three variables: initial, age, and amount. They hold three different types of data: a character, an integer, and a floating-point value. These variables are local to the function and cannot be used outside main(). (You can declare variables before main(), and those variables are known as global , but global variables are generally not recommended.)

C does not initialize variables to zero as Visual Basic does. The assignment statement works just as it does in Visual Basic. You ...