#include <stdbool.h>
#include <stdio.h>

bool nested_boolean_example(int a, int b, int c, int d) {
	if ((a > 10 && (b < 5 || c > 7)) &&
	    (d != 0 && (a * d > b + c))) {
		return true;
	}
	return false;
}

bool complex_nested_conditions(int x, int y, int z) {
	if ((x == y || (y < z && z > 20)) &&
	    ((x + y > z * 2) ||
	     (x - z < y * 3 && x > 100))) {
		return true;
	}
	return false;
}

int main() {
	int a = 15;
	int b = 3;
	int c = 8;
	int d = 2;

	int x = 5;
	int y = 5;
	int z = 25;

	if (nested_boolean_example(a, b, c, d) &&
	    complex_nested_conditions(x, y, z)) {
		printf(
			"Both nested conditions are true.\n");
	}

	if ((a < b && (b == c || d > 100)) ||
	    ((a * b - d < c * c + b) && (d != 1))) {
		printf(
			"Complex condition with nested expressions is true.\n");
	}

	return 0;
}
