UVa 10079 Pizza Cutting Solution in C / C++

 

Source Code 

#include<stdio.h>

int main() {

  int a, i, n;

  long int b, c;

  while (scanf("%d", & n) == 1 && (n >= 0)) {

    a = 0;

    b = 1;

    for (i = 0; i <= n; i++) {

      c = a + b;

      a = a + 1;

      b = c;

    }

    printf("%ld\n", c);

  }

  return 0;

}