سؤال في الجافا

[loosh]

بسم الله الرحمن الرحيم

انا مبتدأه في لغة الجافا وعندي سؤال استصعب علي ممكن يكون سهل على غيري,,,,ويمكن والله ثلاثةايام وانا احاول فيه بس للأسف كل مره يطلع لي اخطاء.... :') وهل له اكثر من طريقه للحل

لذلك ارجو من ذوي الخبره مساعدتي فيه مشكورين...... :fff:

وهذا هو السؤال.....

write a java program to read a list of exam marks

(integer percentage in the range o to 100) and to output the total number of grade and

the number of grade in each letter-grade categories as shown below

Grade Exam marks

A 90-100

B 80-89

C 70-79

D 60-69

F 0-50

to end the output the user need to enter negative mark.Do not use the negatave score in the calculation

____________________________

out put

===========================

[ JUC GRADING SYSTEM ]

====program by:your name====

Enter the exam marks:

98

87

86

85

78

73

72

72

72

70

66

63

50

-1>>>end input

the total number of grade= 14

number of A's=1

number of B's=4

number of C's=6

number of D's=2

number of F's=1

the lowest score=50

the highest score=98

Average score=75.5

تم تعديل يناير 12, 2011 بواسطه loosh

[loosh]

هذي احد المحاولات

import java.util.Scanner;

public class tt

{

public static void main(String[] args)

{

Scanner keyboard=new Scanner(System.in);

System.out.println("===========================");

System.out.println("[ JUC GRADING SYSTEM ]");

System.out.println("=====Program By:Sarah =====");

System.out.println(" Enter the exame marks: ");

int marks,total=0,min=0,max=0,A,B,C,D,F,sum;double av;

marks=keyboard.nextInt();

while((marks>=0)&&(marks<=100))

{ total++;

sum+=marks;

if(marks>=90)A++;

else if(marks>=80)B++;

else if(marks>=70)C++;

else if(marks>=60)D++;

else F++;

if (marks>max)

max=marks;

if(marks<min)

min=marks;

System.out.print(" " );

marks=keyboard.nextInt();

}

if(total>0)

av=sum/total;

System.out.println("the total number of grades="+total);

System.out.println("number of A's ="+A);

System.out.println("number of B's ="+B);

System.out.println("number of C's ="+C);

System.out.println("number of D's ="+D);

System.out.println("number of F's ="+F);

System.out.println("The maximum mark ="+max);

System.out.println("The minmum mark ="+min);

System.out.println("The average ="+av);

}

}