1grade band count
#include <stdio.h>
int main(void) {
int a[20];
int i,j,n,grade,excellent=0,pass=0,fail=0;
printf("please input n equal to:");
scanf("%d",&n);
printf("a[n] equal to:");
for(i=0;i<n;i++){
scanf("%d",&a[i]);
if(a[i]<=0){
printf("exit");
break;
}
}
for(i=0;i<n;i++){
printf("%d\t",a[i]);
}