Pointer Practice Questions in C Language
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- What is the output of the following code?
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int x = 10, y = 20;
int* p1 = &x;
int* p2 = &y;
printf("%d %d\n", *p1, *p2);
- What is the output of the following code?
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int x = 10;
int* p1 = &x;
int* p2 = p1;
*p2 = 20;
printf("%d\n", x);
- What is the output of the following code?
Copy code
int x = 10;
int* p1 = &x;
int* p2 = p1;
p1 = NULL;
printf("%d\n", *p2);
How can you pass an array of integers to a function and make the function able to modify the elements of the array?
What is the difference between a pointer and an array in C?
How can you check if a pointer is pointing to a valid memory location or not?
How can you pass a pointer to a function and make the function able to modify the pointer itself?
How can you allocate memory dynamically for an array of integers using pointers?
What is a pointer to a pointer in C and when is it useful?
How can you traverse an array using pointers?
Answers:
- The output is "10 20".
- 1. Hardware Background In C Language
- 2. Computer Organization In C Language
- 3. Why Do We Need Programming Languages
- 4. C Introduction In C Language
- 5. C Standards and Implementation In C Language
- 6. Basic C Programming terminology In C Language
- 7. How do C Programs Run In C Language
- 8. First C Program In C Language
- 9. Comment in C Language
- 1. Variables In C Language
- 2. Variable naming rules In C Language
- 3. Data types In C Language
- 4. Ranges of Data Types In C Language
- 5. sizeof( ) In C Language
- 6. Global Variables and Scope In C Language
- 7. Const In C Language
- 8. Static Variables In C Language
- 9. Literals in C Language
- 10. Type Conversion in C Language
- 11. Swap Two Numbers In C Language
- 1. Input and Output In C Language
- 2. printf In C Language
- 3. scanf In C Language
- 4. fgets In C Language
- 5. Format specifier for Integers In C Language
- 6. Format Specifiers for floating point number In C Language
- 7. Other format specifiers In C Language
- 8. Width and Precision in printf() In C Language
- 9. A Buffering Example In C Language
- 10. Escape Sequence In C Language
- 1. Arithmetic Operators In C Language
- 2. Unary Arithmetic Operators In C Language
- 3. Comparison Operators In C Language
- 4. Assignment Operators In C Language
- 5. Logical Operators In C Language
- 6. Bitwise Operator in C (AND, OR and XOR) In C Language
- 7. Bitwise Operator in C (Left shift, Right Shift and NOT) In C Language
- 8. Signed number Representation and Bitwise NOT In C Language
- 9. Operator Precedence & Associativity In C Language
- 10. Day Before N Days In C Language
- 11. Sum of Natural Numbers In C Language
- 12. Last Digit of a Number In C Language
- 13. Practice Problem on Operators In C Language
- 1. If Else In C Language
- 2. Even Odd Program In C Language
- 3. Else if with example In C Language
- 4. Nested If Else with Example In C Language
- 5. Switch In C Language
- 6. Even Odd Program In C Language
- 7. Largest of Three Numbers In C Language
- 8. Leap Year Program In C Language
- 9. Simple Calculator In C Language
- 1. Functions In C Language
- 2. Applications of Functions In C Language
- 3. Function Declaration & Definition In C Language
- 4. How Functions Work In C Language
- 5. InIine Function In C Language
- 6. Practice Problems on C Functions In C Language
- 7. Recursion Practice Questions In C Language
- 8. First Digit of a Number In C Language
- 9. Prime Factorization In C Language
- 1. While Loop In C Language
- 2. For Loop In C Language
- 3. Do While Loop In C Language
- 4. Break In C Language
- 5. Continue In C Language
- 6. Nested Loops In C Language
- 7. Patterns In C Language
- 8. Square Pattern In C Language
- 9. Triangle Pattern In C Language
- 10. Inverted Triangle Pattern In C Language
- 11. Factor of Number In C Language
- 12. Check for Prime In C Language
- 13. Next Prime Number In C Language
- 14. All Divisor of a Number In C Language
- 15. GCD of Two Numbers In C Language
- 16. LCM of Two Numbers In C Language
- 17. Fibonacci Numbers in C Language
- 18. Count Digits of a Number in C Language
- 19. Table of a Number in C Language
- 1. Address and Dereference Operators in C Language
- 2. Introduction to Pointers in C Language
- 3. Applications of Pointers in C Language
- 4. Function Parameters and Pointers in C Language
- 5. Array Parameters and Pointers in C Language
- 6. Pointer Arithmetic in C Language
- 7. Void Pointer in C Language
- 8. Null in C Language
- 9. Pointers versus Arrays in C Language
- 10. Pointer to Pointer in C Language
- 11. Pointer Practice Questions in C Language
- 1. String In C (Introduction) in C Language
- 2. String Syntax Size and Length in C Language
- 3. String Comparison in C Language
- 4. String Copy in C Language
- 5. String concatenation in C Language
- 6. Pattern Searching in C Language
- 7. strncat(), strncmp(), and strncpy() in C Language
- 8. Substing search in C Language
- 9. String Tokenization in C Language
- 10. Reverse a String in C Language
- 11. Check for Palindrome in C Language
- 12. String: Binary to Decimal in C Language
- 13. String: Decimal to Binary in C Language
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