Declare a pointer to an array that has 10 ints in each row: allocate memory to hold a 4 x 10 array

#include <stdio.h>
#include <stdlib.h>

int pwr(int a, int b);

int main(void)
{
  int (*p)[10]; 

  register int i, j;

  p = malloc(40 * sizeof(int));

  if(!p) {
    printf("Memory request failed.\n");
    exit(1);
  }

  for(j = 1; j < 11; j++)
    for(i = 1; i < 5; i++) 
        p[ i - 1][j - 1] = pwr(j, i);

  for(j = 1; j < 11; j++) {
    for(i = 1; i < 5; i++) 
        printf("%10d ", p[i-1][j-1]);
    printf("\n");
  }

  return 0;
}

/* Raise an integer to the specified power. */
pwr(int a, int b)
{
  register int  t=1;

  for(; b; b--) t = t*a;
  return t;
}

Related examples in the same category

1.	Arrays and pointers
2.	Arrays and pointers taken further
3.	Arrays and pointers: char array
4.	Arrays and pointers: char array index
5.	Two-Dimensional arrays and pointers

Declare a pointer to an array that has 10 ints in each row: allocate memory to hold a 4 x 10 array : Pointer Array « Pointer « C / ANSI-C

Related examples in the same category