What is the output for the call DisplayTime(2, 24, 65)? void DisplayTime(int hours, int minutes, int seconds) { // Parameter error checking if ((hours 12)) { cout

Question

What is the output for the call DisplayTime(2, 24, 65)? void DisplayTime(int hours, int minutes, int seconds) { // Parameter error checking if ((hours < 1) || (hours > 12)) { cout << "Invalid hours" << endl; hours = 1; } if ((minutes < 1) || (minutes > 60)) { cout << "Invalid minutes" << endl; minutes = 1; } if ((seconds < 1) || (seconds > 60)) { cout << "Invalid seconds" << endl; seconds = 1; } cout << hours << ":" << minutes << ":" << seconds; }

BlackTom AI · Accepted Answer

Because the seconds argument (65) is greater than the allowed upper bound (60), the function prints an error message and substitutes seconds with 1 before printing the final time. 1. Relevant knowledge points and concepts - Parameter validation: the function checks each parameter against allowed ranges using if statements. - Logical comparisons: (value < 1) || (value > 60) tests whether a value is outside the inclusive range 1..60. - Order of execution and side effects: printing via cout happens immediately when a condition is true, and resetting the parameter (seconds = 1) affects the final output. 2. Step-by-step reasoning - Call: DisplayTime(2, 24, 65) - Check hours: if ((hours < 1) || (hours > 12)) - hours = 2 → 2 is between 1 and 12, so the condition is false. No message, hours remains 2. - Check minutes: if ((minutes < 1) || (minutes > 60)) - minutes = 24 → 24 is between 1 and 60, so the condition is false. No message, minutes remains 24. - Check seconds: if ((seconds < 1) || (seconds > 60)) - seconds = 65 → 65 > 60, so condition is true. The function executes: - cout << "Invalid seconds" << endl; // prints "Invalid seconds" followed by newline - seconds = 1; // replaces 65 with 1 - Final output line: cout << hours << ":" << minutes << ":" << seconds; - With hours=2, minutes=24, seconds=1 → prints "2:24:1" on the next line. 3. Intermediate steps shown - Detect invalid seconds (65 > 60) - Print "Invalid seconds" and newline - Set seconds = 1 - Print final time "2:24:1" 4. Why the correct answer is correct Because the code explicitly prints the invalid-seconds message and then uses the corrected seconds value (1) when printing the time, the exact console output is the error message on one line, followed by the corrected time on the next. 5. Why other options are incorrect - "2:24:1": omits the error message printed by the seconds check. - "Invalid seconds 2:24:65": shows the error message but fails to show that seconds was reset to 1. - "2:24:65": omits the error message and fails to reflect the reset. 6. Conclusion The program prints: Invalid seconds 2:24:1 This matches the provided correct answer: "Invalid seconds 2:24:1".

类似问题

Which approach is more robust?

If TryParse returns false, what should be done?

A user leaves the age TextBox empty and clicks a button. What should the program do?

Which of the following is NOT an input error?

The purpose of validation is to

What type of check is shown above?

The purpose of validation is to check that data input is

The following pseudocode is an example of which type of validation check?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单