Phonetics 5000 Manuale Utente

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 ISACC Instruction Manual

In many of the examples in this chapter, we use x and y as variable names.  The variable name
can be up to 15 characters long.  Numbers can also be used as long as the name does not
begin with a number.  In addition to letters and numbers, the underscore character may be
used in a variable name, but it cannot be the first character of the variable name.

The following are valid variable names:

int average;

int outside_temp;

int condition1;

int contact12;

The following are NOT valid variable names:

int 3temp;

int average_result_per_day;

int inside room;

int _timer;

4.  The ISACC C language has other tools available to construct your program.  One of the
most important tools is the “if ” statement.  The “if ” statement is used to make a decision
whether or not to execute a sequence of statements.

 The following program will print “X is big” only if x if greater than 10, which in

this case is true.  When the condition in the “if ” statement is true, the program continues
through the statements inside the “if ” braces.  If the condition was not true, the program skips
the block of statements.

int x;

main()

  {

  x=14;

  if (x>10)

    {

    puts(“X is big\n”);

    }

  }

The “else” statement can be used with the “if ” statement and gives instructions on what to do
when the "if" statement is false.