#include<stdio.h>
#include<string.h>

int main(int argc, char* argv[])
{
	// get input for name
	if (argc > 4)
	{
		printf("Too many arguments\n");
	}
	else if (argc == 1)
	{
		printf("At least 1 argument required\n");
	}
	else if (argc == 4)
	{

		char* first = argv[1];
		char* last = argv[2];
		char* index_str = argv[3];
		int index = atoi(index_str);

		int total = strlen(first) + strlen(last);

		int j = 0;
		for (j; j <= index; j ++)
		{
			printf("The name is: %s %s\n", first, last);
		}

		if (total < index)
		{
			printf("Error, index out of bound\n");
		}
		else if (strlen(first) > strlen(last))
		{
			printf("My first name is bigger than my last name\n");
		}
		else if (strlen(first) <  strlen(last))
		{
			printf("My last name is bigger than my first name\n");
		}
		else
		{
			printf("My first and last name have the same number of characters\n");
		}

		char fullName[12];
		/* strcpy(fullName, first); */
		strcpy(fullName, first);
		strcat(fullName, last);
		char char1 = fullName[index];
		int i = 0;
		for (i; i < total; i ++)
		{
			fullName[i] = tolower(fullName[i]);
		}

		printf("fullName[%d]: %c\n", index, toupper(char1));
		printf("name in lower: %s\n", fullName);

	}
	else
	{
		printf("Name is too long (2 words max)\n");
	}
}