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This one appears in my exam, i was partly wrong and I don't know why. Please check. C++ language.
Consider the following declarations:
const int SIZE = 12;
int list[SIZE];
int *listPtr = list;
int j = 0;
int sum = 0;
Which of the following correctly finds the sum of all the elements of list?
i) for (j = SIZE  1; j >= 0; j)
sum += list[j];
ii) sum = listPtr[0];
for (j = 1; j < SIZE; j ++)
sum += listPtr[j];
iii) for (listPtr = list; listPtr != list + Size; sum += *(listPtr++));
I chose i and ii, which is partly wrong (got 3/5 points). thank you in advance.
 one year ago
 one year ago
This one appears in my exam, i was partly wrong and I don't know why. Please check. C++ language. Consider the following declarations: const int SIZE = 12; int list[SIZE]; int *listPtr = list; int j = 0; int sum = 0; Which of the following correctly finds the sum of all the elements of list? i) for (j = SIZE  1; j >= 0; j) sum += list[j]; ii) sum = listPtr[0]; for (j = 1; j < SIZE; j ++) sum += listPtr[j]; iii) for (listPtr = list; listPtr != list + Size; sum += *(listPtr++)); I chose i and ii, which is partly wrong (got 3/5 points). thank you in advance.
 one year ago
 one year ago

This Question is Closed

slotemaBest ResponseYou've already chosen the best response.2
Assuming that `Size` in the third option should be `SIZE`, all three methods seem correct to me (also tested it with a small C program and all three methods give the same result).
 one year ago

nphuongsun93Best ResponseYou've already chosen the best response.0
thank you, sry couldn't reply to you sooner. my openstudy just doesn't load lately.
 one year ago
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