Added linear search and display function

linear-search.c

@@ -1,16 +1,33 @@
 #include <stdio.h>
-void display()
+void display(int arr[],int n)
 {
   // display code goes here
+  for(int i=0;i<n;i++){
+    printf("%d",arr[i]);
+  }
 }
-int linearSearch()
+int linearSearch(int arr[],int a,int n)
 {
   // linear search code goes here
+  for(int i=0;i<n;i++){
+    if(arr[i]==a)
+      return i;
+  }
+  return 0;
 }
 int main()
 {
   int arr[] = {5, 3, 7, 9, 10, 12, 7, 2, 4};
   // main program
-
+  int a;
+  printf("Enter element to search:");
+  scanf("%d",&a);
+  int n=linearSearch(arr,a,(sizeof(arr)/sizeof(arr[0])));
+  if(n){
+    printf("Element found at index :%d",n);
+  }
+  else{
+    printf("Element not found");
+  }
   return 0;
 }