Phonetics 5100, 5000 manual Following are not valid variable names

Sensaphone® 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.

Example: 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.

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