Stack using Array

datastructure-with-noob/stack_array.c

@@ -0,0 +1,78 @@
+#include<stdio.h>
+
+#define n 5
+int stack[n];
+int top=-1;
+void push()
+{
+    int x;
+    if(top==n-1)
+    {
+    printf("Overflow\n");
+
+    }
+    printf("enter data\n");
+    scanf("%d",&x);
+    top=top+1;
+    stack[top]=x;
+}
+
+void pop()
+{
+    int x;
+    if(top==-1)
+    {
+    printf("Underflow\n");
+        }
+    x=stack[top];
+    printf("The popped element is %d\n",x);
+    top=top-1;
+}
+
+void peek()
+{
+int x;
+x=stack[top];
+printf("THe top most element is %d\n",x);
+}
+
+void display()
+{
+  int i;
+  printf("abc\n");
+  for(i=top;i>=0;i--)
+  {
+      printf("%d ",stack[i]);
+  }
+  printf("\n");
+}
+int main() 
+{
+int ch;
+do
+{   printf("1 for Push \n2 for pop \n3 for peek \n4 for display \n0 for exit\n");
+
+    printf("enter the choice\n");
+    scanf("%d",&ch);
+    switch(ch)
+    {
+        case 1:
+        push();
+        break;
+        case 2:
+        pop();
+        break;
+        case 3:
+        peek();
+        break;
+        case 4:
+        display();
+        break;
+        default:
+        printf("Invalid Choice\n");
+        break;
+    }
+}while(ch!=0);
+  return 0;
+}
+

search-with-noob/linear_search.cpp

@@ -18,12 +18,18 @@ int main()
 
     int search_element;
     //Take the input of the element to be searched by the user.
+	cout<<"Enter the search element"<<endl;
+	cin>>search_element;
 
 
     int result = linear_search(arr,size,search_element);
 
     //If the result is -1 then print that the element is not present in the array.
     //If the result is any value but -1 then print the element is found on that index.
+	if(result==-1)
+		cout<<"Element not found"<<endl;
+	else
+		cout<<"Element found at index "<<i<<endl;
 
     return 0;