statements

An user function of Asir is defined in the following form.

def name(parameter, parameter,...,parameter) {
    statement
    statement
    ...
    statement
}    

As you can see, the statement is a fundamental element of the function. Therefore, in order to write a program, you have to learn what the statement is. The simplest statement is the simple statement. One example is an expression with a terminator (`;' or `$'.)

S = sum(N);

A `return statement' and `break statement' are also primitives to construct `statements.' As you can see the syntactic definition of `if statement' and `for statement', each of their bodies consists of a single `statement.' Usually, you need several statements in such a body. To solve this contradictory requirement, you may use the `compound statement.' A `compound statement' is a sequence of `statement's enclosed by a left brace `{' and a right brace `}'. Thus, you can use multiple statement as if it were a single statement.

if ( I == 0 ) {
    J = 1;
    K = 2;
    L = 3;
}

No terminator symbol is necessary after `}', because `{' statement sequence `}' already forms a statement, and it satisfies the syntactical requirement of the `if statement.'

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