Initialization of non-character arrays with memset may cause errors

Source: Internet
Author: User

function:memset is the initialization of a single byte.

Possible error: if an int array is initialized to an integer other than 0, an error occurs, such as:

memset (arr, 1, sizeof (int) *length)
Each number is initialized to 00000001 00000001 00000001 00000001. And not 1.

#include <iostream> #include <algorithm> #include <iterator> #include <memory.h>using namespace std;void updatearray (int arr[], const int& length) {    int index = 2;    int value = 3;    Arr[index] = value;//    * (arr+index) = value;//    * (arr+index) + +;} int main () {    const int length = 6;    int arr[length];    memset (arr, 0, sizeof (int) *length);    Updatearray (arr, length);    Copy (arr, arr+length, ostream_iterator<int> (cout, ""));    cout<<endl;    return 0;}

Initialization of non-character arrays with memset may cause errors

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