ตัดเกรด ใช้ If ภาษา JAVA

ช่วงคะแนนที่กำหนด ดังนี้

80 - 100    A
70 - 79      B
60 - 69      C
50 - 59      D
0 - 49        F

public class Grade{
public static void main (String args[]){
String grade;
int point = 79; // ระบุคะแนน
    if ((point >= 80) && (point <= 100))
    {grade = "A";}
    else if ((point >=70) && (point < 80))
    {grade = "B";}
    else if ((point >= 60) && (point < 70))
    {grade = "C";}
    else if ((point >= 50) && (point < 60))
    {grade = "D";}
    else if ((point >= 0) && (point < 50))
    {grade = "F";}
    else
    {grade  = "Error";}

    System.out.println("Grade = " + grade);
}
}

output :=
Grade = B