Add option to return index in linear search

searching/linear_search.c

@@ -1,32 +1,48 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int linearsearch(int *arr, int size, int val)
+int linearsearch(int* arr, int size, int val)
 {
     int i;
     for (i = 0; i < size; i++)
     {
         if (arr[i] == val)
-            return 1;
+            return i;
     }
-    return 0;
+    return -1;
 }
 
 int main()
 {
-    int n, i, v;
+    int n, i, v, show_idx;
     printf("Enter the size of the array:\n");
     scanf("%d", &n);  // Taking input for the size of Array
 
-    int *a = (int *)malloc(n * sizeof(int));
+    int* a = (int*)malloc(n * sizeof(int));
     printf("Enter the contents for an array of size %d:\n", n);
     for (i = 0; i < n; i++)
         scanf("%d", &a[i]);  // accepts the values of array elements until the
                              // loop terminates//
 
     printf("Enter the value to be searched:\n");
     scanf("%d", &v);  // Taking input the value to be searched
-    if (linearsearch(a, n, v))
+
+    printf("Enter 1 if you want to see the index and 0 if otherwise:\n");
+    scanf("%d", &show_idx);
+
+    int res = linearsearch(a, n, v);
+
+    if (show_idx)
+    {
+        if (res != -1)
+            printf("Element found at index: %d\n", res);
+        else
+            printf("Element not found in the array.\n");
+        free(a);
+        return 0;
+    }
+
+    if (res != -1)
         printf("Value %d is in the array.\n", v);
     else
         printf("Value %d is not in the array.\n", v);