int p1(int *x, int *y){
	return *x + *y;
}

// Problem 2 seems to test if more than one variable is nonzero and returns 1;
int p2(int x, int y, int z){
	if (x == 0 && y == 0) return 0;
	if (x == 0 && z == 0) return 0;
	if (y == 0 && z == 0) return 0;
	return 1;
}

// Problem 3 checks to see if a given character is:
// a lowercase letter
// capital A
// numbers 0-9
int p3(char x){
	if(x == 'A') return 1;
	if(x>='0' && x <= '9') return 1;
	if(x>='a' && x <= 'z') return 1;
	return 0;
}

// Problem 4 computes lexicographical difference
// between the two given strings
int p4(char str1[], char str2[]) {
	int sum = 0;
	int count = 0;
	while(1){
		sum = str1[count] - str2[count];
		if(sum != 0)
			break;
		if(str1[count] == '\0' || str2[count] == '\0') break;
		count++;
	}
	return sum;
}

// Problem 5 takes an integer array as argument 1
// an index integer for argument 2
// and swaps the value of array[index] and array[0]
void p5(int nums[], int len) {
	int x = 0;
	int temp = 0;
	for(x; x < len/2; x++) {
		temp = nums[x];
		nums[x] = nums[len-x-1];
		nums[len-x-1] = temp;
	}
}