Array practise question

day9.cpp

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+#include<iostream>
+#include<cmath>
+using namespace std;
+int main()
+{
+	//array use dto store same type of data. which is contigious
+	int arr[5];
+	int size= sizeof(arr)/sizeof(arr[0]);
+	for (int i=0;i<size;i++)
+	{
+		cin>>arr[i];
+	}
+	//to print the output
+	for (int i=0;i<size;i++)
+	{
+		cout<<arr[i]<<" ";
+	}
+	cout<<endl;
+	cout<<"//find the sum of the given array:"<<endl;
+	int arr[6];
+	int sum=0;
+	cout<<"Enter manually number:"<<endl;
+	int size=sizeof(arr)/sizeof(arr[0]);
+	for (int i=0;i<size;i++)
+	{
+		//takeinput 
+		cin>>arr[i];
+	}
+	cout<<endl;
+	//for output
+	for (int i=0;i<size;i++)
+	{
+		sum=sum+arr[i];
+	}
+	cout<<"The sum of the array is:"<<sum<<endl;
+
+	cout<<"//Question: calculate the maximum element from the array:"<<endl;
+	cout<<"Enter number manually by keypad:"<<endl;
+	int max[5];
+	int m=arr[0];
+	for (int i=0;i<5;i++)
+	{
+		cin>>max[i];			//take the input
+	}
+
+	for (int i=0;i<5;i++)
+	{
+		if (max[i]>m)
+		{
+			m=max[i];
+		}
+	}
+	cout<<"The maximum element in the array is:"<<m<<endl; 
+
+
+cout<<"Questoion: Search a given element in the array if it present return idx else -1:"<<endl;
+	//take input
+	int arrr[5];
+	int ans=-1;
+	cout<<"Enter the number manually by keypard:"<<endl;
+	for(int i=0;i<5;i++)
+	{
+		cin>>arrr[i];
+	}	
+
+	//
+	int key;
+	cout<<"take input number that you want to search:"<<endl;
+	cin>>key;
+
+
+	//for itertae the loop to find key 
+	for (int i=0;i<5;i++)
+	{
+		if (arrr[i]==key)
+		{
+			ans=i;
+		}
+	}
+	cout<<"Element at:"<<ans<<endl;
+}