3回答

• 

  weixin_慕尼黑4374089

  2023-02-18 10:32:25

  int *arr = (int *)malloc(sizeof(int)* 4);

  for(int i = 0; i < 20; i++)

  {

      arr[i] = i;
  

  }

  
  

  free(arr);

  0 1
• 

  weixin_慕UI5435188

  2022-02-14 10:23:20

  和数组一样

  0 0
• 

  weixin_慕前端0223983

  2022-01-10 00:36:12

  float *arr=(float *)malloc(sizeof(float)*20);

  arr[0]=100;

  arr[1]=99.5;

  *(arr+2)=80.5;

  .......

  0 0