zad3

#include<stdio.h>
#include<stdlib.h>

double pi(int n){
    if (n == 1) return 1*4;
    if(n%2 == 0) {
        return pi(n-1)-(1/(2*n-1))*4;
    }
    else{
        return pi(n-1)+(1/(2*n-1))*4;
    }
}

int main (){
    int n, i;
    float *A;

    scanf("%d", &n);

    A = malloc(n*sizeof(float));

    for (i = 0; i < n; i++){
        A[i] = pi(i+1);
    }

    for (i = 0; i < n; i++){
        printf("%f \n", A[i]);
    }

    return 0;
}