What are the rules for assigning values to a char array…

There are several rules for assigning values to a char array in C++.

1. Assigning values using string literals: you can directly assign a string literal to a char array, for example:

char arr[] = "Hello";

1. Copying strings using the strcpy function: The strcpy function can be used to copy a string into another char array, for example:

char str1[] = "Hello";
char str2[10];
strcpy(str2, str1);

1. Assigning values one character at a time: You can assign values to a char array one character at a time, for example:

char arr[10];
arr[0] = 'H';
arr[1] = 'e';
arr[2] = 'l';
arr[3] = 'l';
arr[4] = 'o';
arr[5] = '\0'; // 字符串以NULL结尾

Please make sure that when assigning characters to an array, the length of the array is large enough to accommodate all the characters in the string, and ensure that the last character is a NULL character (‘\0’) to signify the end of the string.