Mastering the Coding Interview- Top C Programming Questions to Ace Your Technical Assessment
Interview coding questions are a crucial part of the hiring process for many tech companies. These questions are designed to assess a candidate’s problem-solving skills, coding abilities, and understanding of programming concepts. In this article, we will delve into some common interview C coding questions and provide insights on how to approach them effectively.
One of the most frequently asked interview C coding questions is to write a function that reverses a string. This question tests a candidate’s ability to manipulate strings and understand pointers in C. To solve this problem, candidates can use the following approach:
“`c
include
include
void reverseString(char str) {
int len = strlen(str);
for (int i = 0; i < len / 2; i++) {
char temp = str[i];
str[i] = str[len - i - 1];
str[len - i - 1] = temp;
}
}
int main() {
char str[] = "Hello, World!";
printf("Original string: %s", str);
reverseString(str);
printf("Reversed string: %s", str);
return 0;
}
```
Another common question is to implement a function that checks if a given string is a palindrome. This question tests a candidate’s understanding of string manipulation and conditional logic. Here’s a possible solution:
“`c
include
include
include
bool isPalindrome(char str) {
int len = strlen(str);
for (int i = 0; i < len / 2; i++) {
if (str[i] != str[len - i - 1]) {
return false;
}
}
return true;
}
int main() {
char str[] = "madam";
if (isPalindrome(str)) {
printf("The string is a palindrome.");
} else {
printf("The string is not a palindrome.");
}
return 0;
}
```
One of the classic interview C coding questions is to implement a function that finds the factorial of a given number. This question tests a candidate’s understanding of recursion and loops. Here’s an example solution using recursion:
“`c
include
int factorial(int n) {
if (n == 0) {
return 1;
}
return n factorial(n – 1);
}
int main() {
int num = 5;
printf(“Factorial of %d is %d”, num, factorial(num));
return 0;
}
“`
These are just a few examples of interview C coding questions. Candidates should be prepared to tackle a variety of questions that test their knowledge of C programming, data structures, algorithms, and problem-solving skills. By practicing and understanding the underlying concepts, candidates can improve their chances of success in technical interviews.
