Question

有人请解释下面嵌套循环中发生的事情。我无法理解它是如何工作的。

int numberOfTimesheets;
int centsPerHour = 0;
int hoursWorked;
total = 0;
numberOfTimesheets = stdin.nextInt();

for(int i = 1; i <= numberOfTimesheets; i++){
   hoursWorked = 0;
   centsPerHour = stdin.nextInt();
   for (int ii = 1; ii <= 5; ii++){
      hoursWorked = hoursWorked + stdin.nextInt();
   }
   total = total + (hoursWorked * centsPerHour);
}

Answer 1

嵌套for循环迭代5次，将5个用户输入汇总到变量hoursWorked。指向所有这些可能是计算用户在该周工作的小时数（每周的每一天的每次迭代）。然后通过将他的小时数乘以他/小时的工资来获得他的工资，并将其添加到total。

这很简单，你可能唯一不理解的是：

hoursWorked = hoursWorked + stdin.nextInt();

它转换为类似的东西：

new value of hoursWorked = old value of hoursWorked + userInput

它也可以写成：

hoursWorked += stdin.nextInt();

Answer 2

这是代码评论它在每一步所做的事情：

//go through each time sheet
for(int i = 1; i <= numberOfTimesheets; i++){
    hoursWorked = 0; // reset the number of hours worked (presumably for that week).
    centsPerHour = stdin.nextInt(); //get the wage of the current timesheet

    //go through each day for the current timesheet
    for (int ii = 1; ii <= 5; ii++){
        hoursWorked = hoursWorked + stdin.nextInt(); //add up the number of hours worked in that week
    }
    total = total + (hoursWorked * centsPerHour); //add the amount of money made this week to their current total (salary).
}

有人可以向我解释这个嵌套循环中发生了什么吗？

2 个答案: