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C Programming Starter Kit 2.0
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SamsPublishing-CProgrammingStarterKit-v2.0-Win31.iso
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tyc
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list15_4.c
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C/C++ Source or Header
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1993-10-16
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58 lines
/* Demonstrates passing a pointer to a multidimensional */
/* array to a function. */
#include <stdio.h>
void printarray_1(int (*ptr)[4]);
void printarray_2(int (*ptr)[4], int n);
main()
{
int multi[3][4] = { { 1, 2, 3, 4 },
{ 5, 6, 7, 8 },
{ 9, 10, 11, 12 } };
/* ptr is a pointer to an array of 4 ints. */
int (*ptr)[4], count;
/* Set ptr to point to the first element of multi. */
ptr = multi;
/* With each loop, ptr is incremented to point at the next */
/* element (that is, next 4-element integer array) of multi. */
for (count = 0; count < 3; count++)
printarray_1(ptr++);
puts("\n\nPress a key...");
getch();
printarray_2(multi, 3);
}
void printarray_1(int (*ptr)[4])
{
/* Prints the elements of a single four-element integer array. */
/* p is a pointer to type int. You must use a type cast */
/* to make p equal to the address in ptr. */
int *p, count;
p = (int *)ptr;
for (count = 0; count < 4; count++)
printf("\n%d", *p++);
}
void printarray_2(int (*ptr)[4], int n)
{
/* Prints the elements of an n by four-element integer array. */
int *p, count;
p = (int *)ptr;
for (count = 0; count < (4 * n); count++)
printf("\n%d", *p++);
}