The correct answer is E. strcpy.h
The strcpy function is defined in the string.h header file. It copies a string from one location to another. The syntax for the strcpy function is as follows:
char *strcpy(char *dest, const char *src);
The dest parameter is the address of the destination string. The src parameter is the address of the source string. The strcpy function copies the source string to the destination string, including the terminating null character.
For example, the following code copies the string “Hello, world!” to the string “dest”:
char dest[10];
strcpy(dest, "Hello, world!");
The following code prints the contents of the string “dest”:
printf("%s\n", dest);
The output of the code is:
Hello, world!
The other options are incorrect because they do not define the strcpy function.