public class Main {
public static void main(String[] args) {
double pi = 0;
int c=-1;
double pi4=0;
for (long i=1;i<=100000000;i=i+2) {
// TODO
c=c*(-1);
pi4+=c*(1.0/i);
}
pi=pi4*4;
System.out.println(pi);
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rb-h浪子-含笑
public class Main {
public static void main(String[] args) {
double pi = 0;
int c=-1;
double pi4=0;
for (long i=1;i<=100000000;i=i+2) {
// TODO
c=c*(-1);
pi4+=c*(1.0/i);
}
pi=pi4*4;
System.out.println(pi);
}
}