Question

C语言改错题，急！！！！！！

#include <stdio.h>
void main()
{ float score;
int grade;
printf("ÇëÊäÈëѧÉú³É¼¨:");
scanf("%f",score);
while (score>100||score<0)
{printf("\n ÊäÈëÓÐÎó,ÇëÖØÊä");
scanf("%f",score);
}
switch(score/10)
{ case 10:
case 9: grade='A';
case 8: grade='B';
case 7: grade='C';
case 6: grade='D';
case 5:
case 4:
case 3:
case 2:
case 1:
case 0: grade='E';
}
printf("³É¼¨ÊÇ %5.1f,ÏàÓ¦µÄµÈ¼¶ÊÇ%c\n ", grade, score);

}

Answer 1

scanf("%f",score); 应为 scanf("%f",&score);

grade A、B、C、D、E语句后面都应该加break；语句；
还有就是case语句完了还要加default： break；语句

Answer 2

#include <stdio.h>
void main()
{
float score;
int grade;
printf("tangram_guid_1356682511885ê?è??§éú3é?¨:");
scanf("%f",&score);
while (score>100||score<0)
{
printf("\n ê?è?óD?ó,????ê?");
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';break;
}
printf("3é?¨ê? %c,?àó|μ?μè??ê?%5.1f\n ", grade, score);
}

Answer 3

在每一个grade=...;的分号后面都加上break;

Answer 4

case 9: grade='A'; break;

Answer 5

case 6 7 8 9后面不应该跟个break吗？