sparknotes
What Are Pointers?
Problems
Problem : Are pointers and arrays exactly the same thing? Can they be used identically?
Problem : What does the following program do?
int main()
{
char *p;
for(p = "WNT"; *p; p++) printf("%c", *p - 1);
printf("\n");
return 0;
}
Problem : What does the following program do?
int main()
{
char *p;
for(p = "HAL"; *p; p++) printf("%c", *p + 1);
printf("\n");
return 0;
}
Problem : Will the following program compile? Will it run?
int main()
{
char *p;
p = p + 500;
return 0;
}
Problem : Does the following code compile? What does it do?
int main()
{
char word[] = ;
char *spark[10];
int i;
for(i=0; i<10; i) spark[i] = word + (i % 5);
for(i=0; i<10; i) printf("%c", *spark[i]);
printf("\n");
return 0;
}
Problem : Write the function: int strlen(char *str) or int strlen(char str[]) that takes a string and returns its length. Write it once using pointer notation and once using array notation.
Problem : Give two names for the second element of the array: int spark[5];




