text: #include <stdio.h>
  #include <assert.h>
  
  char size(int cms) {
      char sizeName = '\0';
      if(cms <= 38) {
          sizeName = 'S';
      } else if(cms > 38 && cms <= 42) {
          sizeName = 'M';
      } else if(cms > 42) {
          sizeName = 'L';
      }
      return sizeName;
  }
  int main() {
      assert(size(37) == 'S');
      assert(size(38) == 'S');
      assert(size(40) == 'M');
      assert(size(42) == 'M');
      assert(size(43) == 'L');
      printf("All is well (maybe!)\n");
      return 0;
  }
  