assignment 3

Author: nirajan10

.github/workflows/classroom.yml

@@ -48,7 +48,17 @@ jobs:
             tests/testq17.sh \
             tests/testq18.sh \
             tests/testq19.sh \
-            tests/testq20.sh; do
+            tests/testq20.sh \
+            tests/testq21.sh \
+            tests/testq22.sh \
+            tests/testq23.sh \
+            tests/testq24.sh \
+            tests/testq25.sh \
+            tests/testq26.sh \
+            tests/testq27.sh \
+            tests/testq28.sh \
+            tests/testq29.sh \
+            tests/testq30.sh; do
               echo "Running $t ..."
               if ! $t; then
                 failed=1   # record failure but continue

README.md

@@ -1,4 +1,4 @@
-# Assignment 2: Conditional and loops
+# Assignment 3: Array, Strings and Functions
 
 ## Instructions
 
@@ -10,93 +10,67 @@
 
 ## Questions
 
-**Q1.** Write a C program that takes an integer input from the user and determines if it is positive, negative, or zero.
+**Q1.** Write a C program to find the maximum and minimum elements in an array.
 
-**Q2.** Write a C program that prompts the user for their age and determines if they are eligible to vote (consider the legal voting age in your country).
+**Q2.** Implement a C program to reverse the elements of an array.
 
-**Q3.** Write a C program that calculates the absolute value of a given number without using the built-in absolute value function.
+**Q3.** Write a C program to sort an array of integers in ascending order using a sorting algorithm of your choice (e.g., bubble sort, selection sort, insertion sort).
 
-**Q4.** Write a C program that prints all even numbers between 1 and 100 using a for loop.
+**Q4.** Implement a C program to find the second largest element in an array.
 
-**Q5.** Write a C program that prompts the user for a positive integer and calculates the factorial of that number using a while loop.
+**Q5.** Write a C program to merge two sorted arrays into a single sorted array.
 
-**Q6.** Write a C program that prompts the user for a number and prints its multiplication table up to 10 using a do-while loop.
+**Q6.** Write a C program to find the length of a string without using the built-in string functions.
 
-**Q7.** Write a C program that prints a pattern of asterisks.
+**Q7.** Implement a C program to reverse a string.
 
-```
-    *
-    **
-    ***
-    ****
-    *****
-    ****
-    ***
-    **
-    *
-```
+**Q8.** Write a C program to check if a given string is a palindrome.
 
-**Q8.** Write a C program that prints a pattern of asterisks.
+**Q9.** Implement a C program to count the occurrence of a specific character in a string.
 
-```
-    *
-    **
-    ***
-    ****
-    *****
-```
+**Q10.** Write a C program to concatenate two strings without using the built-in string
+functions.
 
-**Q9.** Write a C program that prints a pattern of asterisks.
+**Q11.** Write a function named calculateAverage that takes an array of integers as input and returns the average of the numbers.
 
-```
-    *****
-    ****
-    ***
-    **
-    *
-```
+**Q12.** Write a function named isPalindrome that takes a string as input and returns 1 if it is a palindrome (reads the same forwards and backwards), and 0 otherwise.
 
-**Q10.** Write a C program that prints a pattern of asterisks.
+**Q13.** Write a function named findFactorial that takes an integer as input and returns its factorial.
 
-```
-      *
-     ***
-    *****
-```
+**Q14.** Write a function named convertTemperature that takes a temperature value in Celsius and converts it to Fahrenheit. The function should return the converted temperature.
 
-**Q11.** Write a C program that prints a pattern of asterisks.
+**Q15.** Write a function named countOccurrences that takes a string and a character as input and returns the number of times the character appears in the string. 
 
-```
-    *****
-     ***
-      *
-```
+**Q16.** Write a function named reverseArray that takes an array of integers as input and reverses the order of the elements in the array.
 
-**Q12.** Write a C program that prints all numbers from 1 to 100 using a for loop.
+**Q17.** Write a function named calculatePower that takes two integers, base and exponent, as input and returns the result of raising the base to the exponent.
 
-**Q13.** Write a C program that calculates the sum of all even numbers from 1 to 50 using a while loop.
+**Q18.** Write a function named findPrimeNumbers that takes an integer n as input and prints all prime numbers from 1 to n.
 
-**Q14.** Write a C program that prompts the user for a positive integer and prints all the factors of that number using a for loop.
+**Q19.** Write a function named calculateFactorialSeries that takes an integer n as input and prints the factorial series up to n.
 
-**Q15.** Write a C program that prompts the user for a positive integer and checks if it is a prime number using a while loop.
+**Q20.** Write a function named calculateGCD that takes two integers as input and returns their greatest common divisor (GCD).
 
-**Q16.** Write a C program that calculates the factorial of a given number using a do-while loop.
+**Q21.** Write a recursive function named calculateFactorial that takes an integer n as input and returns its factorial.
 
-**Q17.** Write a C program that prompts the user for a positive integer and prints a countdown from that number to 1 using a for loop.
+**Q22.** Write a recursive function named calculateFibonacci that takes an integer n as input and returns the nth Fibonacci number. The Fibonacci sequence starts with 0 and 1, and each subsequent number is the sum of the two preceding numbers.
 
-**Q18.** Write a C program that prompts the user for a positive integer and prints the multiplication table for that number up to 10 using a while loop.
+**Q23.** Write a recursive function named calculateGCD that takes two integers a and b as input and returns their greatest common divisor (GCD).
 
-**Q19.** Write a C program that prompts the user for a positive integer and prints a pattern of asterisks (*) in a square shape using nested loops.
+**Q24.** Write a recursive function named calculatePower that takes two integers base and exponent as input and returns the result of raising the base to the exponent.
 
-Example: User’s Input = 2, then pattern to print will be:
+**Q25.** Write a recursive function named calculateSumOfDigits that takes an integer n as input and returns the sum of its digits.
 
-```
-    * *
-    * *
-```
+**Q26.** Write a recursive function named reverseString that takes a string as input and returns the reversed string.
 
-**Q20.** Write a C program that prompts the user for a number between 1 and 7 and prints the corresponding day of the week using a switch-case statement.
+**Q27.** Write a recursive function named printTriangle that takes an integer n as input and prints a triangle of asterisks (*) with n rows.
+
+**Q28.** Write a recursive function named calculateBinary that takes an integer n as input and returns its binary representation as a string.
+
+**Q29.** Write a recursive function named isPalindrome that takes a string as input and returns 1 if it is a palindrome (reads the same forwards and backwards), and 0 otherwise.
+
+**Q30.** Write a recursive function named countOccurrences that takes a string and a character as input and returns the number of times the character appears in the string.
 
 ---
 
-## Deadline: 23:59, Saturday, 6th Sep, 2025
+## Deadline: 23:59, Saturday, 15th Nov, 2025

src/q1.c

@@ -1,6 +1 @@
-/* Write a C program that takes an integer input from the user and determines if it is positive, negative, or zero.
-Expected Output:
-If n > 0, print Positive (case-insensitive, extra messages allowed).
-If n < 0, print Negative (case-insensitive, extra messages allowed).
-If n == 0, print Zero (case-insensitive, extra messages allowed).
-*/
+// Write a C program to find the maximum and minimum elements in an array.

src/q10.c

@@ -1,5 +1 @@
-/* Write a C program that prints a pattern of asterisks.
-      *
-     ***
-    *****
-*/
+// Write a C program to concatenate two strings without using the built-in string functions.

src/q11.c

@@ -1,5 +1 @@
-/* Write a C program that prints a pattern of asterisks.
-    *****
-     ***
-      *
-*/
+// Write a function named calculateAverage that takes an array of integers as input and returns the average of the numbers.

src/q12.c

@@ -1 +1 @@
-// Write a C program that prints all numbers from 1 to 100 using a for loop.
+//  Write a function named isPalindrome that takes a string as input and returns 1 if it is a palindrome (reads the same forwards and backwards), and 0 otherwise.

src/q13.c

@@ -1 +1 @@
-// Write a C program that calculates the sum of all even numbers from 1 to 50 using a while loop.
+// Write a function named findFactorial that takes an integer as input and returns its factorial.

src/q14.c

@@ -1 +1 @@
-// Write a C program that prompts the user for a positive integer and prints all the factors of that number using a for loop.
+// Write a function named convertTemperature that takes a temperature value in Celsius and converts it to Fahrenheit. The function should return the converted temperature.

src/q15.c

@@ -1 +1 @@
-// Write a C program that prompts the user for a positive integer and checks if it is a prime number using a while loop.
+// Write a function named countOccurrences that takes a string and a character as input and returns the number of times the character appears in the string.

src/q16.c

@@ -1 +1 @@
-// Write a C program that calculates the factorial of a given number using a do-while loop.
+// Write a function named reverseArray that takes an array of integers as input and reverses the order of the elements in the array.