How to create an array in C, from n (variable) elements?

Question

Programming

Need to create array mas[n], n-variable

Answer 1

Memory allocation and pointers.

Answer 2

int main(void)
{
int i, SIZE;
int array[SIZE];
scanf(SIZE);
for ( i=0; i < SIZE; i++)
array[i] = ... ;
// enter values ​​or get them via operations
}

Answer 3

In C, there are dynamic arrays whose size is calculated at runtime (and never changes again). They are defined in the same way as ordinary arrays, only the size is not a constant, but a variable.

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

int main() {
  size_t n;
  scanf("%zu", &n);

  int array[n];

  for(size_t i = 0; i < n; ++i)
    array[i] = rand();

  printf("{");
  for(size_t i = 0; i < n; ++i) {
    printf("%i", array[i]);
    if(i < n - 1)
      printf(", ");
    else
      printf("}\n");
  }

  return 0;
}

Answer 4

Google malloc and new