- // ucitaj cjeli broj N, te izracunajj vrijednost formule 1-1/2+1/3-1/4+...1/n
- #include <stdio.h>
- int main () {
- int n, i=1;
- double a, b=1;
- scanf ("%d", &n);
- do {
- if (i%2!=0) a+=1/b; else a-=1/b;
- b
- ++;
- i++;}
- while (i<=n);
- printf ("%lf", a);
- system ("pause");
- return 0;}