C + + array initialization and definition, one-dimensional arrays and two-dimensional arrays

The input and output of a character array can be in two ways:
1) Input output by character, as example 5.9.

2) input or output the entire string at once. For example, the following program segments are available:
Char str[20];
cin>>str; Enter a string with a character array name
cout<<str; Output a string with a character array name
Enter a string at run time, such as:
China
In memory, the array str is shown in state 5.9, and a terminator ′\0′ is automatically appended to the 5 characters.

C + + array initialization and definition, one-dimensional arrays and two-dimensional arrays