how to scan array in c++
To scan an array in C++, you can use a loop along with the cin input stream. Here are the steps:
- Declare an array: First, declare an array of the desired data type and size. For example, to declare an array of integers with a size of 5, you can use the following syntax:
cpp
int arr[5];
- Use a loop to iterate over the array: Next, use a loop to iterate over the elements of the array. You can use a
forloop or awhileloop for this purpose. In each iteration, prompt the user for input and store it in the current array element. Here's an example using aforloop:
cpp
for (int i = 0; i < 5; i++) {
cout << "Enter element " << i << ": ";
cin >> arr[i];
}
In this example, the loop runs 5 times, prompting the user to enter a value for each element of the array.
- Access the array elements: After scanning the array, you can access and use the elements as needed. For example, you can print the elements or perform calculations on them. Here's an example of printing the elements of the array:
cpp
for (int i = 0; i < 5; i++) {
cout << "Element " << i << ": " << arr[i] << endl;
}
In this example, each element of the array is printed on a new line.
That's it! With these steps, you can scan an array in C++ by using a loop and the cin input stream.