Syntax:
clear variable;
clear;
Where,
variable - The name of the variable to remove.
Description:
The clear keyword removes one or more variables from
memory. The variable will no longer be available, and if it is used,
an error will occur. A new variable with the name of a cleared variable
can be created. If no 'variable' parameter is used, all variables are
removed.
| Example
Code |
#
Add a variable
int x = 10;
who();
# Remove the variable using clear
clear x;
who();
# Add another variable with the
# same name (no error produced)
real x = 32.2;
string s = "hello";
who();
# Clear all variables
clear;
who();
# Try to use a cleared variable.
# This will produce an error.
x = 12.2; |
See Also:
Keywords
