1. **Problem:** Design a flowchart with a dual alternative decision structure that assigns 0 to the integer variable numberOne if the integer variable counter is less than 10. Otherwise, assign 77 to numberOne and print the value of numberOne in both cases. 2. **Formula/Logic:** Use an if-else decision structure: $$\text{if } counter < 10 \text{ then } numberOne = 0 \text{ else } numberOne = 77$$ 3. **Explanation:** - Check the value of counter. - If it is less than 10, assign 0 to numberOne. - Otherwise, assign 77. - Print numberOne. 4. **Pseudocode:** ``` if (counter < 10) { numberOne = 0; } else { numberOne = 77; } print(numberOne); ``` --- 1. **Problem:** Draw a structured flowchart or write structured pseudocode describing how to study for an exam including at least two decisions and two loops. 2. **Pseudocode:** ``` start while (not exam_date) { study_materials(); if (understand_topic == false) { review_notes(); } practice_questions(); if (time_to_take_break) { take_break(); } } end ``` 3. **Explanation:** - Loop until the exam date. - Study materials in each iteration. - Decision 1: If topic not understood, review notes. - Practice questions every loop. - Decision 2: If time to take a break, then take a break. --- 1. **Problem:** Find the error in the pseudocode: ``` PRINT "Enter the length of the room : " INPUT length Declare lnteger length ``` 2. **Error:** The variable declaration comes after input and has a typo: "lnteger" instead of "Integer". 3. **Correction:** Declare the variable before input and fix spelling: ``` Declare Integer length PRINT "Enter the length of the room : " INPUT length ``` --- 1. **Problem:** Find the error in the code: ``` Declare Real lowest, highest, average PRINT "Enter lowest, highest score: " INPUT lowest INPUT highest Set average = low + high / 2 PRINT "The average is ", average ``` 2. **Error:** Variables used in calculation are incorrect (low, high instead of lowest, highest) and operator precedence is wrong. 3. **Correction:** Use parentheses and correct variable names: $$average = \frac{lowest + highest}{2}$$ 4. **Corrected code:** ``` average = (lowest + highest) / 2 ``` --- 1. **Problem:** Design a flowchart and implement a C program to find the reverse of a number and check if it is a palindrome. 2. **Algorithm:** - Input number. - Copy number to temp. - Initialize reverse = 0. - While number != 0: - remainder = number % 10 - number = number / 10 - reverse = reverse * 10 + remainder - If temp == reverse, print palindrome message else not palindrome. 3. **Explanation:** - Extract digits from the number one by one. - Build the reverse number. - Compare original and reversed number. --- 1. **Problem:** Write a program to compute product of even numbers entered until sentinel 99. 2. **Logic:** - Initialize product = 1. - Loop input number. - If number == 99, break. - If number is even, multiply product. - Print product. --- 1. **Problem:** Rewrite while loop using for loop: ``` product = 1; i = 0; while (i <= n) { scanf("%d", &a); if (a != i) product *= a; ++i; } ``` 2. **For loop:** ``` product = 1; for (int i = 0; i <= n; i++) { scanf("%d", &a); if (a != i) product *= a; } ``` --- 1. **Problem:** Write a do-while loop that prompts input until value in 0 to 15 inclusive is entered, preventing infinite loop on wrong data type. 2. **Code snippet:** ``` int value; do { printf("Enter a value between 0 and 15: "); if (scanf("%d", &value) != 1) { while (getchar() != '\n'); // clear input buffer value = -1; // invalid } } while (value < 0 || value > 15); ``` 3. **Explanation:** - Use scanf return to check input validity. - Clear input buffer on invalid input. - Repeat until valid input in range.