我正在捕获用户输入,但将其限制在1-100之间。我在正确嵌套此if语句时遇到了一些困难。 目标: 用户可以输入1-100之间的任意数量 如果不是,它将自动设置为0。 我在最后打印结果
// if statement to restrict use to 1-100
hatNumber = in.readInt("How many beaver hats would you like?: \n");
if (hatNumber <= 0 && hatNumber > 100) {
System.out.println("Hats = " + hatNumber);
} else {
hatNumber = 0;
}
photoNumber = in.readInt("How many photographs would you like?: \n");
if (photoNumber <= 0 && photoNumber > 100) {
System.out.println("Photographs = " + photoNumber);
} else {
photoNumber = 0;
jarNumber = in.readInt("How many Jars of maple syrup?: \n");
if (jarNumber <= 0 && jarNumber > 100) {
System.out.println("Jars = " + jarNumber);
} else {
jarNumber = 0;
{
System.out.println("Hats = " + hatNumber);
System.out.println("Photographs = " + photoNumber);
System.out.println("Jars = " + jarNumber);
答案 0 :(得分:1)
首先,如果期望逻辑“用户可以输入1-100之间的任何数量,否则将自动设置为0”。如果没有,请更改
if (hatNumber > 0 && hatNumber <= 100) {
System.out.println("Hats = " + hatNumber);
} else {
hatNumber = 0;
}
最终代码如下。
hatNumber = in.readInt("How many beaver hats would you like?: \n");
if (hatNumber > 0 && hatNumber <= 100) {
System.out.println("Hats = " + hatNumber);
} else {
hatNumber = 0;
}
photoNumber = in.readInt("How many photographs would you like?: \n");
if (photoNumber > 0 && photoNumber <= 100) {
System.out.println("Photographs = " + photoNumber);
} else {
photoNumber = 0;
jarNumber = in.readInt("How many Jars of maple syrup?: \n");
if (jarNumber > 0 && jarNumber <= 100) {
System.out.println("Jars = " + jarNumber);
} else {
jarNumber = 0;
}
}
System.out.println("Hats = " + hatNumber);
System.out.println("Photographs = " + photoNumber);
System.out.println("Jars = " + jarNumber);
答案 1 :(得分:0)
if (hatNumber <= 0 && hatNumber > 100)
在任何情况下,此条件都不可能成立。您应使用以下条件
if (hatNumber > 0 && hatNumber < 100) {
System.out.println("Hats = " + hatNumber);
}
答案 2 :(得分:0)
您在
之后的行中缺少右括号photoNumber = 0;