A Simple C-Lang Pointers Example

main.c

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

int main () {

  typedef struct complex_tag {
    float r;
    float i;
  } complex;

  int tam;
  int i;

  complex *nums;
  scanf("%d", &tam);

  nums = (complex*) malloc( sizeof(complex) * tam );

  for( i = 0; i < tam; i++ ) {
    nums[i].r = i;
    nums[i].i = i*2;
  }

  for( i = 0; i < tam; i++ ) {
    printf("r: %f, i: %f \n ", nums[i].r, nums[i].i);
  }

  free(nums);

  return 0;
}