I have added the file for linear/sequential search

Searching/Linear search

@@ -0,0 +1,26 @@
+#include <stdio.h>
+
+int main()
+{
+    int arr[100],n,i,data,flag=0;//flag is used when the data does not mathces with any of the array element
+    printf("Enter the size of array: ");
+    scanf("%d",&n);
+    printf("Enter the elements in array: ");
+     for(int i=0;i<n;i++){
+         scanf("%d",&arr[i]);
+     }
+     printf("Enter the element you want to search: ");
+    scanf("%d",&data);
+     for(i=0;i<n;i++){
+         if(data==arr[i]){
+             printf("Element is present at index: %d",i);
+             flag=1;
+             break;
+               }
+         }
+         if(flag==0){
+             printf("Element not found.");
+         }
+         return 0;
+
+}