Review: Pointers (c)
Instructions: Think about each question and write the answer in your notebook.
General Questions
1. What does a pointer contain?
2. How do we declare a pointer?
3. What does 'dereferencing a pointer' mean?
White Box Testing
1. Fix the errors in this C source code. There are 2 errors.
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#include<stdio.h>
void main( )
{
int shoes = 3456;
int point = NULL;
point = shoes;
printf("\nThe warehouse contains %d shoes.", shoes);
printf("\nThe computer stores this variable at address %p.", point);
}
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2. Fix the errors in this C source code. There are 2 errors.
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#include<stdio.h>
void main( )
{
int num = 9876;
int *point = NULL;
point = #
printf("\n%p\tNumber's Value \t%p\tPointer's Value", num, point);
printf("\n%p\tNumber's Address\t%p\tPointer's Address", &num, point);
printf("\n\nNotice that the Number's Address is the same as the Pointer's Value.");
}
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3. Fix the errors in this C source code. There are 2 errors.
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#include<stdio.h>
void main( )
{
long zip = 94003;
int *point = NULL;
point = &zip;
printf("\nSara's zip code is %ld.", zip);
printf("\nThe computer stores Sara's zip code at %p.", point);
++zip;
++pont;
printf("\nPablo's zip code is %ld.", zip);
printf("\nThe computer stores Pablo's zip code at %p.", point);
}
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4. Fix the errors in this C source code. There are 2 errors.
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#include<stdio.h>
void main( )
{
long eggs = 130560;
long *point = NULL;
printf("\nKetchum's Poultry Farm produces %ld eggs per week.", eggs);
point = &eggs;
point = eggs * 4;
printf("\nThat's %ld eggs per month.", point);
}
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