[½»Á÷] c++Öгõʼ»¯Êý×é

#include <algorithm>
#include <numeric>


int main(int argc, char* argv [])
{
  // ³õʼ»¯aµÄËùÓÐÔªËØΪ0
  int *a = new int[10]{0};
  delete [] a;
  a = nullptr;

  // °ÑbµÄËùÓÐÔªËظ³ÖµÎª1
  int *b = new int[10];
  std::fill(b, b + 10, 1);
  delete [] b;
  b = nullptr;

  // °ÑcµÄÔªËظ³ÖµÎª1, 2, 3, 4, ..., 10
  int *c = new int[10];
  std::iota(c, c + 10, 1);
  delete [] c;
  c = nullptr;

  // °ÑdµÄÔªËض¼¸³ÖµÎª1
  int *d = new int[10];
  std::generate_n(d, 10, [](){return 1; });
  delete [] d;
  d = nullptr;

  // °ÑeµÄËùÓÐÔªËض¼¸³ÖµÎª1
  int *e = new int[10];
  std::generate(e, e + 10, [](){return 1; });
  delete [] e;
  e = nullptr;

  // °ÑfµÄÇ°ËĸöÔªËسõʼ»¯Îª1, 2, 3, 4, Ê£ÓàµÄ¶¼³õʼ»¯Îª0
  int *f = new int[10]{1, 2, 3, 4};
  delete [] f;
  f = nullptr;

  return 0;
}