#define _CRT_SECURE_NO_WARNINGS
void draw() {
	//your code is here...
}

void isEvenLength() {
	char a;
	int counter = 0;
	printf("type text: ");
	scanf(" %c", &a);
	do {
		scanf("%c", &a);
		if (counter == 0) {
			counter = 1;
		}
		else /*counter ==1*/ {
			counter = 0;
		}
	} while (a != '\n');
	if (counter == 0) {
		printf("Your text's length is even\n");
	}
	else /*counter == 1*/ {
		printf("Your text's length is odd\n");
	}
}

void identifyText() {
	//your code is here...
}

void hexToDec() {
	char num;
	int i = 0;
	int exponent = 1;
	int sumDec = 0;
	printf("type a diversed number is base 16");
	scanf(" %c", &num);
	while (i != '\n') {
		if (num >= 48 && num <= 57) {
			num = num - 48;
		}
		else if (num >= 65 && num <= 70) {
			num = num - 54;
		}
		else if (num >= 97 && num <= 102) {
			num = num - 86;
		}
		else {
			printf("Error!");
		}
		num = num * exponent;
		exponent = exponent * 16;
		exponent++;
		sumDec = sumDec + num;
		printf("the number in base 10 is: ", sumDec);
	}

}

void baseToDec() {
	//your code is here...
}

void bitCount() {
	//your code is here...
}

void main() {
	int choice;
	do {
		printf("Choose an option:\n1: Draw\n2: Even or Odd\n3: Text type\
                \n4: Hex to Dec\n5: Base to Dec\n6: Count bits\n0: Exit\n");
		scanf("%d", &choice);
		switch (choice) {
		case 1: draw();
			break;
		case 2: isEvenLength();
			break;
		case 3: identifyText();
			break;
		case 4: hexToDec();
			break;
		case 5: baseToDec();
			break;
		case 6: bitCount();
		case 0: break;
		default: printf("Wrong option!\n");
		}
	} while (choice != 0);
}