Structured Programming

Course code: SE121, Course title: Structured Programming Section A - Class Test 2 (Set A) Time: 30 mins Full marks: 15 1. Which loop is best suited when the number of iterations is known in advance? 1 a) while b) do-while c) for d) if-else 2. What will be the output of the following code? 1 int i=0; while(i<=5) printf("%d", ++i); a) 1 2 3 4 5 b) 0 1 2 3 4 c) 1 2 3 4 d) None of the above 3. Write a C statement to declare a one-dimensional array of size 5. What will be the index of the first element of the array? 2 4. Identify the error(s), if any, in the following C code snippets and correct them: 4 a. int i = 1; while (i < 5); printf("%d", i); b. int arr[5] = {1, 2, 3, 4, 5}; int sum = 0; for(int i = 0; i <= 5; i++) { sum += arr[i]; } printf("Sum = %d", sum); 5. Based on the marks (out of 15) obtained in Class Test 1, I would like to provide feedback using a grade scale (A–C) as follows: A: You are a true learner (11-15). B: Passed, but needs improvement (6-10). C: Failed (0-5). For any other input, the default message should be: "Unknown." Write a C program that implements the above scenario using a switch-case statement. 3 6. Write a for loop to print all even numbers from 1 to 20. 4