For the block-structured C code below, indicate the values assigned to w,x y, and z int w,x, y, 7 inti 4; int j-5 int j 7; i=6; int i = 8; y-ij 3. For the block-structured code of the following figure, assuming the usual static scoping of declarations, give the scope for each of the twelve declarations ( int v, x, y, z; Block B1/ I int x, z; Block B2 / ( int , xi / Block B3 ( int w, x; Block B4/ ( int y, z /Block B5 4. Consider the context-free grammar: 1 Show how the string aa a can be generated by this grammar 2 Construct a parse tree for this string 3 What language does th is grammar generate? lustify vour answer Page 1 1-+ 5. Which of the following grammars are ambigu MacBook Pro 0 F7 F8 F9 F10