我正在尝试编写一个脚本，其中包含可能的点数迭代以及为每个提交的作业获得的分数。
然后，我想创建一个可能的总点数和获得的总点数，以便能够创建一个显示这些数字的进度报告。
以下是代码，一切正常，只是我的数学错误总数和总收入。
String anotherCourse = "yes"; // variable to control running program
// again
do {
String studentName = ""; // Student Name
String courseName = ""; // Course Name
int assignSub = 0; // Number of Assignments submitted
double pointsWorth = 0; // Points worth for each assignment
double pointsEarned = 0; // Points earned for each assignment
// Calculated
double currentPercent = 0; // Current Percentage
String letterGrade = ""; // Letter Grade
// Display header
System.out.println("\t\t---------------------------");
System.out.println("\t\t What's Your Grade???");
System.out.println("\t\t---------------------------");
// Ask for student name and course name
System.out.print("Enter student name: ");
studentName = input.nextLine();
System.out.print("Enter course name: ");
courseName = input.nextLine();
System.out.println();
// Ask how many assignments were taken
System.out.print("How many assignments have you submitted: ");
assignSub = input.nextInt();
while (assignSub < 0) {
System.out
.println("Assignments submitted point value must be greater than 0...Try Again!");
System.out.println();
System.out.print("How many assignments have you submitted: ");
assignSub = input.nextInt();
}
// and error code if is <= to 0 they take in again
int totalEarned = 0;
int totalWorth = 0;
for (int i = 1; i <= assignSub; i++) {
// How many points is the assignment worth?
System.out.println();
System.out.print("How many points was assignment " + i
+ " worth: ");
pointsWorth = input.nextDouble();
while (pointsWorth < 0) { // Error Message
System.out
.println("Assignment point value must be greater than 0...Try Again!");
System.out.println();
System.out.print("How many points was assignment " + i
+ " worth: ");
pointsWorth = input.nextDouble();
} // end while
System.out.print("How many points did you score: ");
pointsEarned = input.nextDouble();
if (pointsEarned >0 && pointsEarned < pointsWorth){
}
else { //Error Message
System.out.println("Points scored must be between assignment worth and greater than or equal to 0...Try Again!");
System.out.println();
System.out.print("How many points did you score: ");
pointsEarned = input.nextDouble();
}// end while
totalEarned = (int) (pointsEarned + i);
totalWorth = (int) (pointsWorth + i);
}// end for
System.out.println();
System.out.println("\tProgress Report for " + studentName);
System.out.println("\tCourse Name is " + courseName);
System.out
.println("--------------------------------------------------");
System.out
.println("Number of assignments submitted....." + assignSub);
System.out.println("Total points possible..............."
+ totalWorth);
System.out.println("Total points earned................."
+ totalEarned);
// calculate the current percentage
currentPercent = (totalEarned / totalWorth) * 100;
System.out.println("Total percent to date...............%.2f%%\n"
+ currentPercent);
// Write a nested if else statement to figure out letter grade based
// on standard grade chart
if (currentPercent <= 100 && currentPercent >= 93)
letterGrade = "A";
else if (currentPercent < 93 && currentPercent >= 90)
letterGrade = "A-";
else if (currentPercent < 90 && currentPercent >= 87)
letterGrade = "B+";
else if (currentPercent < 87 && currentPercent >= 83)
letterGrade = "B";
else if (currentPercent < 83 && currentPercent >= 80)
letterGrade = "B-";
else if (currentPercent < 80 && currentPercent >= 77)
letterGrade = "C+";
else if (currentPercent < 77 && currentPercent >= 73)
letterGrade = "C";
else if (currentPercent < 73 && currentPercent >= 70)
letterGrade = "C-";
else if (currentPercent < 70 && currentPercent >= 67)
letterGrade = "D+";
else if (currentPercent < 67 && currentPercent >= 63)
letterGrade = "D";
else if (currentPercent < 63 && currentPercent >= 60)
letterGrade = "D-";
else
letterGrade = "E";
System.out.println("Letter grade to date.................."
+ letterGrade);
System.out.println();
System.out
.print("--------------------------------------------------");
// This code ends the do while to run entire program again
System.out
.println("Enter yes if there is another class you want to calculate: ");
anotherCourse = input.next();
input.nextLine(); // causes skipping issue to fix
System.out.print("\n\n\n");
} while (anotherCourse.equalsIgnoreCase("yes"));
System.out
.print("-----------------------------------------------------");
} // end of main
答案 0 :(得分：0)
这是你MATH出错的地方。
totalEarned = (int) (pointsEarned + i);
totalWorth = (int) (pointsWorth + i);
将上面的代码段更改为： -
totalEarned = totalEarned + (int)pointsEarned;
totalWorth = totalWorth + (int)pointsWorth;
第一个区块正在重置totalEarned＆amp;的值。每次迭代totalWorth，而你需要在你的情况下聚合它。
答案 1 :(得分：0)
另外，不需要在else-if循环中再次检查上限。
if (currentPercent >= 93)
letterGrade = "A";
else if (currentPercent >= 90)
letterGrade = "A-";
else if (currentPercent >= 87)
letterGrade = "B+";
else if (currentPercent >= 83)
letterGrade = "B";
else if (currentPercent >= 80)
letterGrade = "B-";
else if (currentPercent >= 77)
letterGrade = "C+";
else if (currentPercent >= 73)
letterGrade = "C";
else if (currentPercent >= 70)
letterGrade = "C-";
else if (currentPercent >= 67)
letterGrade = "D+";
else if (currentPercent >= 63)
letterGrade = "D";
else if (currentPercent >= 60)
letterGrade = "D-";
else
letterGrade = "E";