我需要创建一个使用 while 来查找圆柱体体积的程序。如果用户输入高度的负值,我需要中断 while 循环。我的代码如下所示:
double sentinel=1, h=1, v=0, r, count=0; // declares all variables needed
final double PI=3.14159;
boolean NotNegative=true;
while(NotNegative){// && count==0){ // while both the height is positive AND the total times run is 0
System.out.print("Enter height (Use negative to exit): "); // has the user input the height
h=Double.parseDouble(br.readLine());
sentinel=h; // save sentinel as the inputted height
while(sentinel>0){
System.out.print("Enter radius: "); // have the user input the radius
r=Double.parseDouble(br.readLine());
v=PI*(r*r)*h; // find the volume
System.out.println("The volume is " + v); // print out the volume
count++; // increase the count each time this runs
NotNegative=true;
sentinel=-1;
}
}
有什么帮助吗?