For Loop is not working

[JulioR]

Hello,

I'm having an issue with my code when doing the For Loop. I have to input single digit values in my code where it adds up all the values I input and then show the Lowest number inputed and the Highest number inputed. The code works perfectly when adding up the values no matter what I input BUT when trying to display the Lowest and Highest Value nothing seems to show up.

Here is my code:

 #include <iostream>
#include <iomanip>
#include <string>

using namespace std;

// The user inputed values are solved by the program

void Arrayinfo()
{
	const int size = 30;		// Array Size
	char num[size];				// To hold the number of inputs
	int count = 0,i;			// Loop counter variable
	
	cin >> num;

	for (i=0; i < strlen(num); i++)
	{
		count += num[i] -'0';
	}

	cout << "The Total is " << count << endl;

	int highest, lowest;		// Highest and lowest user inputed value
	int c, num;
	highest = num[0];			// Highest 
	lowest = num[0];			// Lowest

	

	for (num=1; num < size; c++)
	{
		if (num[c] > highest)
			highest = num[c];
		cout << "Highest number is: " << highest << endl;
	}


	for (num=1; num < size; c++)
	{
		if (num[c] < lowest)
			lowest = num[c];
		cout << "Lowest number is: " << lowest << endl;
	}
	

}

// The heading where Program asks user to input their single
// digit values

void userinHeading()
{

	cout << "Enter single digit numbers into the program: " << endl;
}

// Main Function

int main ()
{
	userinHeading();
	Arrayinfo();
	
	return 0;
}

I'm going by an example the Professor put on one of his slides when trying to display the Lowest and Highest values but nothing works :( Help :(

[KurtJD]

You have an int num and a char num, which is undoubtedly causing some problems.

[MikeyBoy]

At line 25, you declare a variable int num. However, you have already declared char num[size]; at line 12.

Does your compiler not warn you about this?

[gobiking]

why did he not have to declare i? is it because it is being used to initialize an int and thus the compiler will auto cast it as an int?

[MikeyBoy]

i is declared on line 13, the same line as count.

Personally, I prefer to declare each variable on its own line (i.e. in its own statement), to make things as clear as possible.

[gobiking]

ah ok just never seen a variable declared in that manner XD. I always also declare my variables before I try to declare/initialize another variable through a formula like.
int a
int b
int sum = a + b;