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How to define a string in c language

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Define strings in C language: use a null-terminated character array, the syntax is: char string_name[] = "string value"; The array size must be enough to accommodate the string and null characters.

How to define a string in c language

Define a string in C language

In C language, a string is a one-dimensional character Array terminated by a null character ('\0'). To define a string, you can use the following syntax:

<code class="c">char string_name[] = "string value";</code>

where:

  • string_name is the name of the string.
  • [] indicates that the variable is an array.
  • "string value" is the actual value of the string, including quotes.
  • '\0' is the null character, which is automatically appended to the end of the string.

Example:

<code class="c">char myString[] = "Hello World";</code>

This statement defines a character array named myString, which contains the string "Hello World" and its null character ending.

Important:

  • The size of the string array must be large enough to accommodate the string and its null character termination.
  • The first element of the string array (i.e. string_name[0]) is the first character of the string.
  • '\0' The null character is necessary to determine the end of the string.
  • You can also use string constants, as follows:
<code class="c">char *myString = "Hello World";</code>

In this case, myString is a pointer to a string constant, and Not an array. String constants are stored by the compiler and cannot be modified.

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