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 Review structures  Program to demonstrate a structure containing a pointer.

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Presentation on theme: " Review structures  Program to demonstrate a structure containing a pointer."— Presentation transcript:

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3  Review structures  Program to demonstrate a structure containing a pointer

4 struct card { int pip; char suit; }; int main ( ) { card c; c.pip = 2; c.suit = ‘s’; return 0; } 2 ‘s’ c.pip c.suit c

5 struct xyz { int a; char b; float c; int *ptr; };

6 #include using std::cout; using std::endl; struct structWithPtrs { int* p1; double* p2; }; int main() { structWithPtrs s; int i1 = 100; double f2; s.p1 = &i1; s.p2 = &f2; *s.p2 = -45.0; cout << "i1 = " << i1 << " *s.p1 = " << *s.p1 << endl; cout << "f2 = " << f2 << " *s.p2 = " << *s.p2 << endl; return 0; }

7 struct structWithPtrs { int* p1; double* p2; };

8 structWithPtrs s; int i1 = 100; double f2; s.p1 = &i1; s.p2 = &f2; *s.p2 = -45.0; s.p1 s.p2 (2fe) s

9 structWithPtrs s; int i1 = 100; double f2; s.p1 = &i1; s.p2 = &f2; *s.p2 = -45.0; s.p1 s.p2 (2fe) s 100 f2 i1(1ab) (67b)

10 structWithPtrs s; int i1 = 100; double f2; s.p1 = &i1; s.p2 = &f2; *s.p2 = -45.0; 1ab 67b s.p1 s.p2 (2fe) s 100 f2 i1(1ab) (67b)

11 structWithPtrs s; int i1 = 100; double f2; s.p1 = &i1; s.p2 = &f2; *s.p2 = -45.0; 1ab 67b s.p1 s.p2 (2fe) s 100 -45.0 f2 i1(1ab) (67b)

12 cout << "i1 = " << i1 << " *s.p1 = " << *s.p1 << endl; cout << "f2 = " << f2 << " *s.p2 = " << *s.p2 << endl; 1ab 67b s.p1 s.p2 (2fe) s 100 -45.0 f2 i1(1ab) (67b) Output i1 = 100 *s.p1 = 100 f2 = -45.0 *s.p2 = -45.0

13 Review structures Program to demonstrate a structure containing a pointer

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