2012Week03Lecture3

18 pointers and arrays contd regardless of the type or

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Unformatted text preview: times vr[i] = v1[i] + v2[i]; // sum v elements } 14 Pointers and Arrays •  Pointers and arrays have a close rela1onship •  Any opera1on that can be done using array subscrip1ng can be done using pointers. 15 Pointers and Arrays (cont’d) •  Recall the array declara1on int y[10]; /* declares an integer array with */ /* 10 elements */ y[0] y[1] y[2] y[3] y[4] y[5] y[6] y[7] y[8] y[9] y: •  Then if py is declared a pointer to an integer int *py; we can assign the pointer to an element of the array by py = &y[0]; 16 Pointers and Arrays (cont’d) •  The assignment py = &y[0]; sets py to point to element 0 of array y, or py contains the address of y[0]. py: y[0] y[1] y[2] y[3] y[4] y[5] y[6] y[7] y[8] y[9] y: The assignment x = *py; will assign the contents of y[0] into x. 17 Pointers and Ar...
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