C + + Array reference

C + + Array reference one, array reference

References to C + + arrays:
Reference is Alias
It's more convenient than a pointer-to-address.
The (&a) [10] in the formal parameter can be regarded as an alias of the A array, and the size of the array must be specified, if there is no subsequent array size, God knows if it is a variable or an array
Comparison of normal and quoted values:
Array Normal pass value: a-->a[10] (or a[])
Array reference value:a--> (&a) [10]
Variable normal value: A-->a
Variable reference value:a--> (&a)
Analogy, well understood

Second, the code example

1 /*2 references to C + + arrays:3 Reference is alias4 It's a lot easier than sending addresses.5 The (&a) [10] in the formal parameter can be regarded as an alias of the A array, and the size of the array must be specified, if there is no subsequent array size, God knows if it is a variable or an array6 comparison of Normal and quoted values:7 array Normal pass value: a-->a[10] (or a[])8 Array Reference value:a--> (&A) [Ten]9 variable normal value: A-->aTen variable reference value:a--> (&a) One analogy, well understood A  - Test Results: - 0 0 0 0 0 0 0 0 0 0 the 0 1 2 3 4 5 6 7 8 9 - */ -  -#include <iostream> + using namespacestd; - voidTestinta[Ten]);//array Normal pass value for printing the value of array a + voidReadData (int(&a) [Ten]);//Array Reference value: Assigns a array to 0--9 A voidPrintdata (int(&a) [Ten]);//Array Reference Pass value: Used to print the value of array a at voidTestinta[Ten]){//array Normal pass value for printing the value of array a -      for(intI=0;i<Ten; i++) -     { -printf"%d", A[i]); -     } -printf"\ n"); in }  - voidReadData (int(&a) [Ten]){//Array Reference value: Assigns a array to 0--9 to      for(intI=0;i<Ten; i++) +     { -a[i]=i; the     } * } $ voidPrintdata (int(&a) [Ten]){//Array Reference Pass value: Used to print the value of array aPanax Notoginseng      for(intI=0;i<Ten; i++) -     { theprintf"%d", A[i]); +     } A } the intMain () { +     inta[Ten]={0}; Assigns an initial value of 0 to each of the array a -Test (a);//array Normal pass value for printing the value of array a $ReadData (a);//Array Reference value: Assigns a array to 0--9 $Printdata (a);//Array Reference Pass value: Used to print the value of array a -      -     return 0; the}

Third, test results

Test results:
0 0 0 0 0 0 0 0 0 0
0 1 2 3 4 5 6 7 8 9

C + + Array reference