C string strncpy() function
Example
Copy part of the data from one string to another:
char str1[] = "Hello World!";
char str2[] = "Write code!";
strncpy(str2, str1, 6);
printf("%s\n", str1);
printf("%s\n", str2);Definition and Usage
The strncpy() function copies the first n characters from one
string into the memory of another string.
This does not add a null terminating character to the copied data, so make sure that the destination string has a null terminating character somewhere after the copied data.
The strncpy() function is defined in the <string.h> header file.
Note: Make sure that the destination string has enough space for the data or it may start writing into memory that belongs to other variables.
Syntax
strncpy(char * destination, char * source, size_t n);The size_t data type is a positive integer.
Parameter Values
| Parameter | Description |
|---|---|
| destination | Required. A pointer to the string to be copied to. |
| source | Required. A pointer to the string being copied. |
| n | Required. The number of characters to be copied. |
Technical Details
| Returns: | A char type pointer to the destination string. |
|---|