#include <stdio.h>
int main() {
int nilai, count = 0;
float sum = 0;
do {
if (nilai >= 0) {
sum += nilai;
count++;
}
} while (nilai >= 0);
if (count > 0)
printf("Rata-rata nilai = %.2f\n", sum
/ count
); else
printf("Tidak ada nilai valid.\n");
return 0;
}
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