// A small silly little C program

#include <stdio.h>

int algebra(int x, int y, int z){
  return 7 + 11 * x + 13 * y + 17 * z;
}

int swap(int* alpha, int* beta){
  int temp = *alpha;
  *alpha = *beta;
  *beta = temp;
}

void print_string(char* s){
  printf("string: '%s'\n", s);
}

int main(int argc, char* argv[]){
  int a;
  char* string1 = "The first string.  I think.";
  char* string2 = "This second string.  So there.";
  int x = 4, y = 6, z = 8;
  swap(&x, &y);
  a = algebra(x, y, z);
  printf("x,y,z = %i,%i,%i, algebra(x,y,z)=%i \n", x, y, z, a);
  if (a > 10)
    print_string(string1);
  else
    print_string(string2);
  return 0;
}