#include <stdio.h>
int main(void) {
// your code goes here
int data[20],i,s=0,a=0,b=0,c=0,d=0;
for(i=0;i<=19;i++){
if(data[i]>=90)s++;
else if(data[i]>=80)a++;
else if(data[i]>=70)b++;
else if(data[i]>=60)c++;
else d++;
}
printf("s:%d人 a:%d人 b:%d人 c:%d人 d:%d人",s
,a
,b
,c
,d
); return 0;
}
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