Use the following code to perform the following tasks: Show all variables that are visible at POSITION #1 only. Provide their nesting level and offset, using the activation record layout discussed in class.S2how the contents of the call stack at the time when control reaches POSITION #1. Use the layout defined in chapter 10 and used in class for statically scoped languages that allow nested functions. Show values and links. function main() { int w = 1, x = 2; function a(bool flag) { int x = 3; function b() { c(4); }
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Use the following code to perform the following tasks:
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Show all variables that are visible at POSITION #1 only. Provide their nesting level and offset, using the activation record layout discussed in class.S2how the contents of the call stack at the time when control reaches POSITION #1. Use the layout defined in chapter 10 and used in class for statically scoped languages that allow nested functions. Show values and links.
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function main() {
int w = 1, x = 2;
function a(bool flag) {
int x = 3;
function b() {
c(4);
}
function c(int x) {
// POSITION #1
}
b();
}
a(true);
}
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Provide a leftmost derivation for the string aaabb using the following grammar:
<S> → <A><B>
<A> → a<A> | a
<B> → b<B> | b
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Identify the shortest possible legal program:
<program> → program <ident> ( <ident> { , <ident> } ) <block>
<ident> → A | B
<block> → begin <stmts> end
<stmts> → <ident> = <ident> | <block>
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Show the following grammar is ambiguous:
<S> → <A><B>
<A> → xx<A> | ε
<B> → x<B> | x
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