The first day demo switch case

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

int main()
{
  int data;

  printf("Please Input a Fraction: \n");

  scanf_s("%d", &data);

  switch (data/10)
  {
  case 0:
  case 1:
  case 2:
  case 3:
    printf("lt is very bad : %d \n", data);
    break;
  case 4:
  case 5:
    printf("lt is bad : %d \n", data);
    break;
  case 6:
  case 7:
    printf("good : %d \n", data);
    break;
  case 8:
  case 9:
  case 10:
    printf("very Good : %d \n", data);
    break;
  default:
    printf("you Input not a errey\n");
  }

}

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Origin www.cnblogs.com/first-book/p/12319813.html