如何检查 C 数组中的元素？

Checking for Elements in an Array in C++

Similar to Java, C++ provides ways to search for specific elements within an array. However, instead of using null checks, C++ employs a different method using pointers.

The std::find function takes a range as input and searches for the first element that matches the provided value. In this case, the range is represented by the beginning and end of the array.

If the element is found, std::find returns a pointer to that element within the range. Otherwise, it returns a pointer to the end of the range.

Here's an example of how to use std::find to check for an element in an array:

Foo array[10];
// Initialize the array here

// Find the element using std::find
Foo *foo = std::find(std::begin(array), std::end(array), someObject);

// Check if the element was found
if (foo != std::end(array)) {
  // Element found
  cout << "Found at position " << std::distance(array, foo) << endl;
} else {
  // Element not found
  cout << "Not found" << endl;
}

By using std::find, you can efficiently search for elements in an array in C++.

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