📄 c5_6.c
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/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{float score;
char grade;
printf("input student's score:");
scanf("%f",&score);
while(score>100||score<0)
{
printf("\n error input,input again");
scanf("%f",&score);
}
switch((int)(score/10))
{
case 10:
case 9: grade='A';break;
case 8: grade='B';break;
case 7: grade='c';break;
case 6: grade='D';break;
case 5:
case 4:
case 3:
case 2:
case 1:
case 0: grade='E';
}
printf("Grade is %5.1f,corresponding level is %c. \n",score,grade);
}
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