void checkStr(){

	printf("Enter sequence of lowercase letters [a-z]:\n");

	char c =scanf("%c", &c);

	while (c != '\n')
	{

		//char c = 0;
		c = scanf("%c", &c);
		int mixed=0;
		int cons=0;
		int increase = 0;
		int decrease = 0;

		if ((c < 97) || (c > 122) || ((c = scanf("%c", &c)) < 97) || ((c = scanf("%c", &c)) > 122))
		{
			printf("Your text is invalid\n");
		}
		else if (c > (c = scanf("%c", &c)))
		{
			decrease = 1;
		}
		else if (c < (c = scanf("%c", &c)))
		{
			increase = 1;
		}
		else if (c == (c = scanf("%c", &c)))
		{
			cons = 1;
		}
		else
		{
			mixed = 1;
			//break;
		}
		printf("ASCII value of %c = %d\n", c, c);
		if ((mixed == 0) && (cons == 0) && (increase == 0) && (decrease == 1))
			printf("Your text is deacreasing");
		else if ((mixed == 0) && !(cons == 0) && (increase == 1) && (decrease == 0))
			printf("Your text is increasing");
		else if ((mixed == 0) && !(cons == 1) && (increase == 0) && (decrease == 0))
			printf("Your text is constant");
		else
			printf("Your text is mixed");

	}