个回答

• Millions0

  2016-11-18 12:07:28

  我也是在入门中，前辈们告诉我代码要多练。希望下面代码能帮到你,一起加油！
  #include <stdio.h>
  int main();
  {
  double i = 0，j = 0;
  char operator = 0;
  printf（"请输入要运算的数:");
  scanf("%lf %c %lf", &i, &operator, &j);
  switch(operator)
  {
  case'+':printf("%lf\n", i+j);
  break;
  case'-':printf("%lf\n",i-j);
  break;
  case'*':printf("%lf\n",i*j);
  break;
  case'/':
  if(j==0)
  {
  printf("除零错误！");
  }
  else
  }
  printf("%lf\n",i/j);
  }
  break;
  default:printf("错误");
  break;
  }
  return 0;
  }

  0