C basics

You need to store the number of students and their average marks. Which declaration is best?

• float students; int avgMarks;

• int students; float avgMarks;

• char students; float avgMarks;

• double students; char avgMarks;

What is wrong with this program?

• scanf should use %d instead of %f

• age should be float

• printf should come after scanf

• No error

What is the output of this code?

• 10

• 20

• 1

• 0

This code compiles but crashes: What’s wrong?

• Wrong format specifier

• Missing return statement

• scanf missing & operator

• Cannot read two inputs

Why does this code compile but produce no output?

• No input

• main is empty

• printf() is missing

• Code is invalid

What are identifiers in C?

• Names used to identify variables, functions, arrays, etc.

• Special symbols used to perform operations

• Predefined keywords in the C language

• Numbers used for looping

What number will z in the sample code given below?

int z, x = 5, y = -10, a = 4, b = 2;

• 5

• 6

• 9

• 10

Determine Output:

• 1 1 2 3

• 1 1 2 2

• 0 1 2 2

• 0 1 2 3

• 9, 9

• 10, 10

• 9, 10

• 10, 9

What is the output of this program?

• Garbage Value

• 20

• Compiler Error

• None of these