#include <assert.h>

int f1(int a) {
	return a + 1;
}

int f2(_Bool b) {
	return b + 1;
}

int f3(int p1, int p2, ...) {
	return p1 + p2;
}

int main() {
  // case1: assign boolean to a integer and use the var
  // in an integer context.
  int x1 = 0;
  int z1 = x1 + 1 == 4;
  assert(z1 + 1 == 1);
  
  // case2: using a boolean expression in an integer context.
  int x2 = 0;
  assert((x2 + 1 == 4) + 1 == 1);
  
  // case3: assign integer to a boolean and use the var
  // in a boolean context.
  int x3 = 0;
  _Bool z3 = x3 + 1;
  if (!z3) {
  	assert(0);
  }
  
  // case4: using integer in a boolean context
  int x4 = 0;
  if (!(x4+1)) { 
  	assert(0); 
  }
  
  // case5: pass a boolean to a integer parameter in a function
  int x5 = f1(x1 + 1 == 4);
  
  // case6: pass an integer to a boolean parameter in a function
  int x6 = 0;
  int z6 = f2(x6);
  
  // case7: pass boolean values to integer parameters in a function 
  // who has a variable number of arguments.

  int x7 = 0;
  _Bool x8 = 0;
  int z7 = f3(x7 + 1 == 4, x8);
  
  return 0;
}