C++ MQCs with Explanation ( MANAGING CONSOLE I/O OPERATIONS )

Which of the following statements are legal? (i) cout << setwidth (5); (ii) cout.setprecision (3); (iii) cout <<123.45 << setw (10);

1. i only
2. and ii
3. i and iii
4. iii only

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Answer: 

Option d: iii only

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Explanation Here