while

Description

The while clause must be terminated by "end".

while expr ,instructions,..., end

while expr do instructions,..., end

while expr then instructions,..., end

Notes:

• The only constraint is that each then or do keyword must be on the same line as while keyword.

• Keywords then or do can be replaced by a carriage return or a comma. For compatibility with Matlab it is also possible, but not recommended, to put a space between the end of the expression and the beginning of the first instruction.

According to the Code Conventions for the Scilab Programming Language it is recommended:

• Start each statement on a new line.

• Write no more than one simple statement per line.

• Break compound statements over multiple lines.

For example, use:

i = 0;
while i<5
    disp(i);
    i = i + 1;
end

rather than

i = 0; while i<5, disp(i), i = i + 1; end

The number of characters used to define the body of any conditional instruction (if while for or select/case) must be limited to 16k.

Examples

e=1; a=1; k=1;
while norm(a-(a+e),1) > %eps,
    e=e/2;
    k=k+1;
end
e,k

See also

• |, || — Binary OR between integers. Logical OR over/between booleans and numbers
• &, && — Binary AND between integers. Logical AND over/between booleans and numbers
• break — keyword to interrupt loops
• for — keyword entering a non-conditional loop
• select — select keyword

History