What is the output if the user enters 10 20 30 40 50? #include #include #include using namespace std; int main() { istringstream inSS; int number; int sum = 0; string numList; cout number) { sum = sum + number; } cout

Question

What is the output if the user enters 10 20 30 40 50? #include #include #include using namespace std; int main() { istringstream inSS; int number; int sum = 0; string numList; cout << "Enter numbers separated by spaces: "; getline(cin, numList); inSS.str(numList); while (inSS >> number) { sum = sum + number; } cout << "Sum: " << sum << endl; return 0; }

BlackTom AI · Accepted Answer

The question shows a C++ program that reads a line of numbers from standard input, uses an istringstream to parse them as integers, sums them, and then prints the total.

First, the program outputs the prompt: Enter numbers separated by spaces: . This is just a user-facing message and does not affect the computed sum.

Next, the program reads a full line of input into the string numList using getline(cin, numList). In the scenario described, the user enters: 10 20 30 40 50

After that, inSS.str(numList) assigns that string to the istringstream inSS, enabling tokenized extraction with the operator>> inside the while loop.

The while (inSS >> number) loop repeatedly extracts integers from the stream until extraction fails (i.e., end of line). For the given input, it reads 10, then 20, then 30, then 40, then 50, in each iteration adding the value to sum:
- sum starts at 0
- sum = 0 + 10 -> 10
- sum = 10 + 20 -> 30
- sum = 30 + 30 -> 60
- sum = 60 + 40 -> 100
- sum = 100 + 50 -> 150

Finally, the program prints Sum: 150 followed by a newline, and returns 0.

So, when the user inputs the numbers 10 20 30 40 50, the observable output consists of the initial prompt line and, after processing, a line that reads Sum: 150. If the answer options had included "Sum: 150", that would be the correct choice; since there are no explicit options provided in the question data, we base the conclusion on the program’s logic and the given input.

Note on formatting: the actual console output sequence would be the prompt line, then the user input, then the final line with the sum. The final sum value, 150, is the result of adding all input numbers in the order given.

CIS-278-HYA-CRN40355 Test 2 ( In-class) Friday April 19 : 3:15-5:15 pm

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