How are strings stored in the C language?

In the C language, strings are represented by character arrays. Character arrays can be used to store strings, with the last element of the array needing to be ‘\0’ (null character) to indicate the end of the string.

Here are some common methods of storing strings:

  1. Use a character array: You can use a character array to store a string, making sure the size of the array is large enough to accommodate the string and its terminator. For example:
char str[50];
strcpy(str, "Hello, World!"); // 将字符串复制到字符数组中
  1. Using a character pointer: one can utilize a character pointer to store a string, with the pointer pointing to the first character of the string. For example:
char *str;
str = "Hello, World!"; // 将字符串赋值给指针

Note: When storing strings using character pointers, string constants are read-only and cannot be modified.

  1. Allocate memory
  2. copy the contents of one string to another.
char *str;
str = (char*)malloc(50 * sizeof(char)); // 分配内存空间
strcpy(str, "Hello, World!"); // 将字符串复制到分配的内存中

Please remember to free up memory space after using a string when using dynamic memory allocation.

In conclusion, in C language, strings can be stored using character arrays or character pointers. The strcpy() function can be used to copy strings into a character array or dynamically allocated memory. It is important to note that if storing strings using character pointers, string constants are read-only.

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