Sams Teach Yourself C in 21 Days

Answers 851

F

10. The following is one of many possible answers:
    #include <stdio.h>
    / Declare a single-dimensional array /

int elements[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

int new_array[10];

int idx;

int main( void )

{

for (idx = 0; idx < 10; idx++)

{

new_array[idx] = elements[idx] + 10 ;

}

for (idx = 0; idx < 10; idx++)

{

printf( “\nelements[%d] = %d \tnew_array[%d] = %d”,

idx, elements[idx], idx, new_array[idx] );

}

return 0;

}

Answers for Day 9

Quiz

1. The address-of operator is the &sign.


2. The indirection operator is used. When you precede the name of a pointer by ,it
   refers to the variable pointed to.


3. A pointer is a variable that contains the address of another variable.


4. Indirection is the act of accessing the contents of a variable by using a pointer to
   the variable.


5. They are stored in sequential memory locations, with lower array elements at lower
   addresses.
   6.&data[0]
   data


6. One way is to pass the length of the array as a parameter to the function. The sec-
   ond way is to have a special value in the array, such as NULL, signify the array’s
   end.


7. Assignment, indirection, address-of, incrementing, differencing, and comparison.

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