Latihan CPP 4.5 { }

#include <iostream>
using namespace std;
#include <stdio.h>

void author(){
    printf("nama : La ode ian");
    printf("\nnim  : 3420210002"); }
    
void garis(){
    puts("\n==========================================");
}
int main() {   // default return type of main in c++ is int

    int nilai;
    printf("Input nilai matakuliah: "); 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("\nGAGAL"), printf("\nGRADE D");
    

    if (nilai >= 0 && nilai < 45) 
        printf("\nGAGAL"), printf("\nGRADE E");
    

    if (nilai < 0 || nilai > 100)
        printf("\nInput nilai antara 0-100");
    garis();    
    author(); 
    return 0;
}