C Programming MCQs & Practice Paper – 2026

Prepare for your upcoming C Programming exams with this expected question paper. Includes multiple-choice questions, short answer questions, and programming exercises with answer hints.

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Section A – Multiple Choice Questions (1 mark each, 10 marks)

1. Which of the following is the correct syntax to declare a pointer in C?
   a) int ptr; ✅
   b) int ptr;
   c) int ptr;
   d) ptr int;

2. Output of:

int x = 5; printf("%d", x++);

a) 5 ✅
b) 6
c) 0
d) Compiler Error

3. Function used for dynamic memory allocation:
   a) malloc() ✅
   b) alloc()
   c) memalloc()
   d) callocall()

4. Operator with highest precedence:
   a) * ✅
   b) +
   c) =
   d) &&

5. Size of float in most compilers:
   a) 2 bytes
   b) 4 bytes ✅
   c) 8 bytes
   d) 1 byte

6. Keyword to stop a loop:
   a) exit
   b) stop
   c) break ✅
   d) continue

7. Default cases in switch statement:
   a) 0 or 1 ✅
   b) Multiple
   c) Always 1
   d) None

8. Invalid storage class in C:
   a) auto
   b) register
   c) dynamic ✅
   d) extern

9. Output of:

char str[] = "C Programming";
printf("%c", str[2]);

a) C
b) P
c) (space) ✅
d) o

10. Correct way to pass an array to a function:
    a) void func(int arr[])
    b) void func(int *arr)
    c) Both a & b ✅
    d) void func(int arr)

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Section B – Short Answer Questions (Hints)

1. Difference between ++i and i++ → Pre-increment vs post-increment.

2. Pointer → Stores address of a variable; used for dynamic memory, arrays, and functions.

3. malloc() vs calloc() → malloc: uninitialized memory, calloc: initialized to zero.

4. For loop syntax → for(initialization; condition; increment){}

5. Break vs Continue → Break exits loop, Continue skips current iteration.

6. Advantages of functions → Modularity, reusability, easy debugging.

7. Struct → Collection of different data types. Example: struct student {int id; char name[20];};

8. #include <file> vs #include "file" → <> searches system directories, "" searches current directory first.

9. Recursion → Function calling itself. Example: factorial calculation.

10. sizeof → Returns memory size of variable or data type.

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Section C – Programming / Coding Practice (Hints)

1. Largest of three numbers → Use if-else ladder.

2. Factorial using recursion → Function calling itself until n=1.

3. Reverse a string → Loop from end to start, print characters.

4. Check prime → Loop from 2 to n/2, check divisibility.

5. Sum of array elements → Loop through array and add values.

6. Linear search → Loop array to find element.

7. Swap numbers using pointers → Use temporary variable and * operator.

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Section D – Advanced / Application-Based Practice (Hints)

1. Calculator using switch → Use switch-case for +, -, *, /.

2. Count vowels & consonants → Loop through string, use if-else.

3. Matrix multiplication → Nested loops multiplying rows & columns.

4. Stack implementation using array → Push: add element; Pop: remove last element.

5. Sum of digits using recursion → Return last digit + recursive call on remaining digits.

6. Merge two sorted arrays → Compare elements and store in new array.

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Instructions:

• Practice all sections carefully.

• Write well-commented code for programming exercises.

• Understand MCQs and short answer hints for quick revision.

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