Final answer:
The statement that the strcpy function overwrites the contents of its first string argument is true, as it copies the source string into the destination string, including the null terminator.
Step-by-step explanation:
The statement "The strcpy function will overwrite the contents of its first string argument" is true. The strcpy function in C programming is used to copy the contents of one string into another. When using strcpy, the destination string's content is completely overwritten by the source string's content, including the null terminator '\0'. If the destination array is not large enough to hold the source string, this can lead to buffer overflow, which is a common security issue in programming.
For example:
char source[] = "Hello";
char destination[10];
strcpy(destination, source);
After executing the strcpy function, the contents of the destination array will be exactly the same as source, "Hello", with the previous contents of destination being completely overwritten.