11 | 9 | sharafat

solutions/sharafat/11/9.c

@@ -1,9 +1,74 @@
 #include <stdio.h>
-
+#include <stdlib.h>
 struct vector
 {
-    int elements*;
+    int *elements;
     int size;
 };
 
-// upcoming-soon
+void createVector(struct vector *v, int size)
+{
+    v->elements = (int *)malloc(size * sizeof(int));
+    v -> size = size;
+}
+
+void addElement(struct vector *v)
+{
+    int element;
+    for (int i = 0; i < v->size; i++)
+    {
+        printf("Enter element %d: ", i + 1);
+        scanf("%d", &element);
+        v->elements[i] = element;
+    }
+}
+
+void modifyElement(struct vector *v)
+{
+    int index;
+    int newValue;
+    printf("Enter index: ");
+    scanf("%d", &index);
+    printf("Enter new value: ");
+    scanf("%d", &newValue);
+    if (index >= 0 && index < v->size)
+        v->elements[index] = newValue;
+}
+
+void multiplyByScalar(struct vector *v)
+{
+    int scalar;
+    printf("Enter scalar: ");
+    scanf("%d", &scalar);
+    for (int i = 0; i < v->size; i++)
+    {
+        v->elements[i] *= scalar;
+    }
+}
+
+void displayVector(struct vector *v)
+{
+    printf("Vector: ");
+    for (int i = 0; i < v->size; i++)
+    {
+        printf("%d ", v->elements[i]);
+    }
+    printf("\n");
+}
+
+int main()
+{
+    struct vector v;
+    int vector_size;
+    printf("Enter vector size: ");
+    scanf("%d", &vector_size);
+    createVector(&v, vector_size);
+    addElement(&v);
+    displayVector(&v);
+
+    modifyElement(&v);
+    displayVector(&v);
+
+    multiplyByScalar(&v);
+    displayVector(&v);
+}