大家好，我几乎完成了这个程序，只是我的总数没有显示正确的值，它们只显示零。我已经浏览了很长时间，并找到了为什么会发生这种情况。有人可以在这里帮助我吗？总数在底部附近的 getTotals() 方法中计算。谢谢！
import java.util.Scanner;
public class Assignment1Q2 {
int age = 0;
char gender;
char show;
char choice = 'y';
int over30MY = 0, over30FY = 0, under30MY = 0, under30FY = 0;
int over30MN = 0, over30FN = 0, under30MN = 0, under30FN = 0;
int totalCalls = 0;
int totalWatchers = 0;
float perTotalWatchers = 0.0f;
float perU30M = 0.0f, perU30F = 0.0f, perO30M = 0.0f, perO30F = 0.0f, perTotalF = 0.0f, perTotalM = 0.0f;
float perTotalU30 = 0.0f, perTotalO30 = 0.0f, perTotal = 0.0f;
public static void main(String[] args) {
Assignment1Q2 a = new Assignment1Q2(); //creates an objects to call non-static methods
a.Info(); //Prints student info
System.out.println("");
System.out.println("Thanks for your call\nPlease answer some questions");
System.out.println("");
while(a.choice == 'y') {
a.collectData();
} // end of while loop
a.getTotals();
a.printTotals();
}//end of main
public void Info() { //Prints student Info
System.out.println("Name:");
System.out.println("Student Id:");
System.out.println("");
System.out.println("Tutor:");
System.out.println("Tutorial:");
}
public void collectData() {
Scanner userInput = new Scanner(System.in); //collects data from user
//ask questions
System.out.println("What is your age?\n");
age = userInput.nextInt();
System.out.println("Male or Female (Enter M or Y)");
gender = userInput.next().charAt(0);
gender = Character.toLowerCase(gender);
System.out.println("Do you watch the show regularly? (Enter Y or N)");
show = userInput.next().charAt(0);
show = Character.toLowerCase(show);
System.out.println("Do you want to enter another person's details? (Enter Y or N)");
choice = userInput.next().charAt(0);
choice = Character.toLowerCase(choice);
//store data
if((age >= 30) && (gender == 'm') && (show == 'y')) {
over30MY++;
}
else if((age >= 30) && (gender == 'f') && (show == 'y')) {
over30FY++;
}
else if((age < 30) && (gender == 'm') && (show == 'y')) {
under30MY++;
}
else if((age < 30) && (gender == 'f') && (show == 'y')) {
under30FY++;
}
else if((age >= 30) && (gender == 'm') && (show == 'n')) {
over30MN++;
}
else if((age >= 30) && (gender == 'f') && (show == 'n')) {
over30FN++;
}
else if((age < 30) && (gender == 'm') && (show == 'n')) {
under30MN++;
}
else if((age < 30) && (gender == 'f') && (show == 'n')) {
under30FN++;
}//end of if else
}//end of collectData
public void getTotals() {//calculate totals for printing
totalCalls = over30MY + over30FY + under30MY + under30FY + over30MN + over30FN + under30MN + under30FN;
totalWatchers = over30MY + over30FY + under30MY + under30FY;
perTotalWatchers = ((totalWatchers / totalCalls) * 100); //rounds percentage to nearest whole number
if(totalWatchers > 0) {
perU30F = ((under30FY / totalWatchers) * 100); //Total Under 30 Females
perU30M = (under30MY / totalWatchers) * 100; //Total Under 30 Males
perO30F = ((over30FY / totalWatchers) * 100); //Total Over 30 Females
perO30M = ((over30MY / totalWatchers) * 100); //Total Over 30 Males
perTotalF = Math.round(perU30F + perO30F); //Total Females
perTotalM = Math.round(perU30M + perO30M); //Total Males
perTotalU30 = Math.round(perU30F + perU30M); //Total Under 30
perTotalO30 = Math.round(perO30F + perO30M); //Total Over 30
perTotal = Math.round(perTotalF + perTotalM); //Total
}
else
System.out.println("There was no-one who watched the show");
}//end of getTotals
public void printTotals () { //Prints the Totals
System.out.println("Total People called is "+totalCalls);
System.out.println("Number of people who watch the show regularly is "+totalWatchers);
System.out.println("Percentage of those who watch the show is regularly is "+perTotalWatchers+"%");
System.out.println("");
final Object[][] table = new String[4][];
table[0] = new String[] { "Gender", "%Under 30", "%30 or Over", "%Total" };
table[1] = new String[] { "Female", " "+perU30F, " "+perO30F, " "+perTotalF };
table[2] = new String[] { "Male", " "+perU30M, " "+perO30M, " "+perTotalM };
table[3] = new String[] { "Total", " "+perTotalU30, " "+perTotalO30, " "+perTotal };
for (final Object[] row : table) {
System.out.format("%15s%15s%15s%15s\n", row);
}
}//end of printTotals
}// end of class