Question: 1. The function sum() in Figure 2.25 is called for the first time by the main program. From the second time on, it is called

1. The function sum() in Figure 2.25 is called for the first time by the main program. From the second time on, it is called by itself. *

(a) How many times is it called altogether, including the call from main()?

(b) Draw a picture of the main program variables and the run-time stack just after the function is called for the third time. Do not draw the stack frame for main(). You should have three stack frames.

(c) Draw a picture of the main program variables and the run-time stack just before the return from the call of part (b). You should have three stack frames, but with different contents from part (b).

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