New hello message in hello.c

src/hello.c

@@ -3,7 +3,7 @@
 
 int main(int argc, char *argv[]) {
   // This is your first C program my friend
-  printf("Hello, RTU World from C Lab in 2025!\n");
+  printf("Hello, Professor my name is Edasu RTU World from C Lab in 2025!\n");
   printf("You passed %d argument(s).\n", argc - 1);
   for (int i = 1; i < argc; ++i) {
     printf("  arg[%d] = %s\n", i, argv[i]);

src/lab3_task1.c

@@ -1,6 +1,6 @@
 /*
  * Lab 3, Task 1
- * Student Name, Student ID
+ * Edasu Yadık, 231AEB028
  *
  * Implement array algorithms:
  *   - find minimum value
@@ -44,27 +44,33 @@ int main(void) {
 
 // Implement functions below
 int array_min(int arr[], int size) {
-    // TODO: return smallest element
-    int my_min = INT_MAX; //set to max infinity
-    for (int i=0;i<size;i++) {
-        if (my_min > arr[i]) {
+    int my_min = arr[0]; 
+    for (int i = 1; i < size; i++) {
+        if (arr[i] < my_min) {
             my_min = arr[i];
         }
     }
-    return my_min; // placeholder
+    return my_min;
 }
 
 int array_max(int arr[], int size) {
-    // TODO: return largest element
-    return 0; // placeholder
+    int my_max = arr[0]; 
+    for (int i = 1; i < size; i++) {
+        if (arr[i] > my_max) {
+            my_max = arr[i];
+        }
+    }
+    return my_max;
 }
-
 int array_sum(int arr[], int size) {
-    // TODO: return sum of elements
-    return 0; // placeholder
+    int sum = 0;
+    for (int i = 0; i < size; i++) {
+        sum += arr[i];
+    }
+    return sum;
 }
 
 float array_avg(int arr[], int size) {
-    // TODO: return average as float
-    return 0.0f; // placeholder
+    int sum = array_sum(arr, size);
+    return (float) sum / size;
 }

src/lab3_task2.c

@@ -1,6 +1,6 @@
 /*
  * Lab 3, Task 2
- * Student Name, Student ID
+ * Edasu Yadık, 231AEB028
  *
  * Practice using pointers as function parameters.
  * Implement:
@@ -38,9 +38,11 @@ int main(void) {
 
 // Implement functions below
 void swap(int *x, int *y) {
-    // TODO: swap values using a temporary variable
+    int temp = *x;  
+    *x = *y;         
+    *y = temp;       
 }
 
 void modify_value(int *x) {
-    // TODO: multiply value by 2
+    *x = *x * 2;
 }

src/lab3_task3.c

@@ -1,6 +1,6 @@
 /*
  * Lab 3, Task 3
- * Student Name, Student ID
+ * Edasu Yadık, 231AEB028
  *
  * Implement basic string handling functions.
  * Write your own versions of:
@@ -41,10 +41,20 @@ int main(void) {
 
 // Implement functions below
 int my_strlen(const char *str) {
-    // TODO: count characters until '\0'
-    return 0; // placeholder
+    int length = 0;
+    while (str[length] != '\0') {
+        length++;
+    }
+    return length;
 }
 
+
+
 void my_strcpy(char *dest, const char *src) {
-    // TODO: copy characters until '\0'
+     int i = 0;
+    while (src[i] != '\0') {
+        dest[i] = src[i];
+        i++;
+    }
+    dest[i] = '\0'; 
 }