#include <stdio.h>
int main(void) {
int i,data[20];
int S=0,A=0,B=0,C=0,D=0;
for(i=0;i<20;i++){
}
for(i=0;i<20;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は%d人、Aは%d人、Bは%d人、Cは%d人、Dは%d人",S
,A
,B
,C
,D
); return 0;
}
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