While 循环
package com.guo.struct;public class WhileDemo01 {public static void main(String[] args) {int i = 0;while (i<100){i++;System.out.println(i);}}
}死循环 尽量避免
package com.guo.struct;public class WhileDemo02 {public static void main(String[] args) {//死循环 尽量避免while (true){}}
}
计算1+2+3+......+100=?
package com.guo.struct;public class WhileDemo03 {public static void main(String[] args) {int i = 0;int sum = 0;while (i<=100){sum = sum + i;i++;}System.out.println(sum);}
}