student marks array

#include <stdio.h>
#include <math.h>

int main() {
  int size, i;

  printf("Enter the size of your array: ");
  scanf("%d", &size);

  int marks[size];

  for (i = 0; i < size; i++) {
    printf("%d. Enter marks: ", i+1);
      scanf("%d", &marks[i]);
  }

  printf("\nYou entered\n");

  for (i = 0; i < size; i++) {
    printf("Marks: %d\n", marks[i]);
  }

  return 0;
}