Program Grade Kelulusan C++

#include <stdio.h>
int main()
{
int nilai;
printf("Input nilai mata kuliah: ");
scanf("%i", &nilai);

if (nilai >= 85 && nilai <= 100) {
printf("\nLULUS");
printf("\nGRADE A");
}
if (nilai >= 75 && nilai < 85) {
printf("\nLULUS");
printf("\nGRADE B");
}
if (nilai >= 60 && nilai < 75) {
printf("\nLULUS");
printf("\nGRADE C");
}
if (nilai >= 45 && nilai < 60) {
printf("\nLULUS");
printf("\nGRADE E");
}
if (nilai < 0 || nilai > 100) {
printf("\nInput nilai antara 0-100");
}
return 0;
}

Matur Sembah Nuwun