answers

Author: nirajan10

src/q1

@@ -1 +1,19 @@
-// Write a C program to find the maximum and minimum elements in an array.
+// Write a C program to find the maximum and minimum elements in an array.
+
+#include <stdio.h>
+
+int main() {
+    int n, i, max, min;
+    printf("Enter number of elements: ");
+    scanf("%d", &n);
+    int arr[n];
+    for(i=0; i<n; i++) scanf("%d", &arr[i]);
+
+    max = min = arr[0];
+    for(i=1; i<n; i++) {
+        if(arr[i] > max) max = arr[i];
+        if(arr[i] < min) min = arr[i];
+    }
+    printf("Max: %d, Min: %d\n", max, min);
+    return 0;
+}

src/q1.c

@@ -1 +1,19 @@
-// Write a C program to concatenate two strings without using the built-in string functions.
+// Write a C program to concatenate two strings without using the built-in string functions.
+
+#include <stdio.h>
+
+int main() {
+    char str1[100], str2[100];
+    printf("Enter first string: ");
+    scanf("%s", str1);
+    printf("Enter second string: ");
+    scanf("%s", str2);
+
+    int i=0, j=0;
+    while(str1[i] != '\0') i++;
+    while(str2[j] != '\0') str1[i++] = str2[j++];
+    str1[i] = '\0';
+
+    printf("Concatenated string: %s\n", str1);
+    return 0;
+}

src/q10

@@ -1 +1,19 @@
-// Write a function named calculateAverage that takes an array of integers as input and returns the average of the numbers.
+// Write a function named calculateAverage that takes an array of integers as input and returns the average of the numbers.
+
+#include <stdio.h>
+
+float calculateAverage(int arr[], int n) {
+    int sum = 0;
+    for(int i=0; i<n; i++) sum += arr[i];
+    return (float)sum / n;
+}
+
+int main() {
+    int n;
+    printf("Enter number of elements: ");
+    scanf("%d", &n);
+    int arr[n];
+    for(int i=0; i<n; i++) scanf("%d", &arr[i]);
+    printf("Average: %.2f\n", calculateAverage(arr, n));
+    return 0;
+}

src/q10.c

@@ -1 +1,21 @@
-//  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.
+//  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.
+
+#include <stdio.h>
+
+int isPalindrome(char str[]) {
+    int i = 0, j;
+    while(str[i] != '\0') i++;
+    j = i - 1;
+    for(i=0; i<j; i++, j--)
+        if(str[i] != str[j]) return 0;
+    return 1;
+}
+
+int main() {
+    char str[100];
+    printf("Enter a string: ");
+    scanf("%s", str);
+    if(isPalindrome(str)) printf("Palindrome\n");
+    else printf("Not a palindrome\n");
+    return 0;
+}

src/q11

@@ -1 +1,17 @@
-// Write a function named findFactorial that takes an integer as input and returns its factorial.
+// Write a function named findFactorial that takes an integer as input and returns its factorial.
+
+#include <stdio.h>
+
+long findFactorial(int n) {
+    long fact = 1;
+    for(int i=1; i<=n; i++) fact *= i;
+    return fact;
+}
+
+int main() {
+    int n;
+    printf("Enter a number: ");
+    scanf("%d", &n);
+    printf("Factorial: %ld\n", findFactorial(n));
+    return 0;
+}