adding lab 3 work

Lab 3/lab work.c

+#include <stdio.h>
+#include <stdlib.h>
+
+void task1 ();
+void task2 ();
+void task3 ();
+
+int main() {
+    printf("Please input the task you want to check: \n1: Task 1\n2: Task 2\n3: Task 3\n");
+    int input = 0;
+    scanf("%d", &input);
+    switch (input) {
+        case 1:
+            task1();
+            break;
+        case 2:
+            task2();
+            break;
+        case 3:
+            task3();
+            break;
+        default:
+            printf("Wtf did you just input?!?!?");
+    }
+    return (EXIT_SUCCESS);
+}
+
+void printInt(int a[], int size) {
+    printf("All even numbers:\n");
+    for (int i = 0; i < size; i++) {
+        if (a[i] % 2 == 0) {
+            printf("%d\n", a[i]);
+        }
+    }
+    printf("All odd numbers:\n");
+    for (int i = 0; i < size; i++) {
+        if (a[i] % 2) {
+            printf("%d\n", a[i]);
+        }
+    }
+    printf("Reverse crap:\n");
+    for (int i = size - 1; i >= 0; i--) {
+        printf("%d\n", a[i]);
+    }
+}
+
+void task1 () {
+    int size = 10;
+    int a[] = { 1,2,3,4,5,6,7,8,9,10 };
+    printInt(a, size);
+}
+
+void task2 () {
+    int length;
+    printf("Please input the length of the array: ");
+    scanf("%d", &length);
+    int a[length];
+    
+    int x = 0;
+    int y = 1;
+    int z;
+    
+    for (int i = 0; i < length; i++) {
+        if (i < 2) a[i] = i;
+        else {
+            z = x + y;
+            x = y;
+            y = z;
+            a[i] = z;
+        }
+    }
+    printf("Printing %d Fibonacci numbers:\n", length);
+    for (int i = 0; i < length; i++) {
+        printf("%d\n", a[i]);
+    }
+    printInt(a, length);
+}
+
+void task3 () {
+    int length;
+    
+    printf("Please input array length: ");
+    scanf("%d", &length);
+    printf("Please input %d numbers: \n", length);
+    int a[length];
+    
+    for (int i = 0; i < length; i++) {
+        scanf("%d", &a[i]);
+    }
+    
+    int prev = a[0];
+    int isTrue = 1;
+    
+    // Ascending check
+    for (int i = 1; i < length; i++) {
+        if (prev >= a[i]) {
+            isTrue = 0;
+        }
+    }
+    if (isTrue) {
+        printf("Integers is ascending!");
+        return;
+    }
+    
+    // Descending check
+    prev = a[0];
+    isTrue = 1;
+    for (int i = 1; i < length; i++) {
+        if (prev <= a[i]) isTrue = 0;
+    }
+    if (isTrue) {
+        printf("Integers is descending!");
+        return;
+    }
+    
+    // No match
+    printf("It is neither ascending or descending!");
+}
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