Question: Consider the C program given below. You will be asked to determine which variables are visible in a number of different situations. In each case,

Consider the C program given below. You will be asked to determine which variables are visible in a number of different situations. In each case, identify each variable by its name and the line number of its declaration. Note: for this problem, only list visible variable names, not function names.

(a) C uses static scoping. Say which variables are visible in the bodies of each of the functions: main, A, B. (b) If C used dynamic scoping and the calling sequence is main calls B. Say which identifiers would be visible in B. (c) If C used dynamic scoping and the calling sequence is main calls A. Say which identifiers would be visible in A. (d) If C used dynamic scoping and the calling sequence is main calls A; A calls B. Say which identifiers would be visible in B.

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