The form of character data storage in memory and its usage (C implementation)

The form of character data storage in memory and its usage (C implementation)
1, put a word constants amount in a character variable, not actually put the character itself into the memory unit, but the corresponding ASCII code of the character into the storage unit. For example, the ASCII code for the character ' A ' is C1, ' B ' is 98, and in memory the value of the variable, c2, is shown in the following figure (a). is actually stored in binary form, as shown in (b).

Since in memory, character data is stored in ASCII code, it is stored in the same form as an integer. The C language enables the use of both character and integer data. A character data can be output either as a character or as an integer. When outputting as a character, the ASCII code in the storage cell needs to be converted to the corresponding character and then output. When outputting as an integer, the ASCII code is output directly as an integer. You can also perform arithmetic operations on character data, which is equivalent to arithmetic operations on their ASCII code. Value, the character data occupies only one byte, and it only holds integers between the 0~255.

2. Assign an integer to a character variable.
1 Main () {
2 Char Ch1,ch2;
3 CH1 = 97;
4 CH2 = 98;
5 printf ("%c%c\n", CH1,CH2);
6 printf ("%d%d\n", CH1,CH2);
7} The results of the operation are as follows:
A b
97 98