import java.util.Scanner;
public class Main{
public static void main(String [] args){
Scanner s = new Scanner(System.in);
double x = s.nextDouble();
int a = -1;
double d = 0,c;
// int b = 1; ****
for(int i = 1;i<=10;i++){
a = (a+2);
c = Math.pow(-1,i+1);
int b = 1; //****
for(int j = 1;j<=a;j++){
b = bj;
}
d = d + cMath.pow(x,a)/b;
}
System.out.printf("%.3f",d);
}
}
第一处,定义在循环外只赋一次值。第二处,定义在循环内,每次循环都会重新赋值。
发问题注意代码缩进,方便别人看代码,支持md文档,可以使用代码块发问题
import java.util.Scanner;
public class Main{
public static void main(String [] args){
Scanner s = new Scanner(System.in);
double x = s.nextDouble();
int a = -1;
double d = 0,c;
// int b = 1; ****
for(int i = 1;i<=10;i++){
a = (a+2);
c = Math.pow(-1,i+1);
int b = 1; //****
for(int j = 1;j<=a;j++){
b = bj;
}
d = d + cMath.pow(x,a)/b;
}
System.out.printf("%.3f",d);
}
}