convert program

[LucasArroyo]

Can anyone teach me how to convert my code using class.

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

using namespace std;



int main(){
	
	string s;
		cin>>s;
	
	int len = s.length();
	int width,height,i,j,k;
	
	width=floor(sqrt(len)); //rows
	height=ceil(sqrt(len)); //columns
	
	for(i=0;i<height;i++)
	{
		for(j=0;j<height;j++)
	{
		k=(j*height)+i;
		cout<<s[k];
	}
		cout<<"\n";
	}
	
	return 0;
}

I tried it, but I'm stuck.

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

using namespace std;

class squareCipher{
	
	private:
		
		
		int width;
		int height;
	
	public:
		
		int len;
		
		void set_Width()
	

		
		
};

int main(){
	
	squareCipher simmon;
	
	string input;
	
	cout << "Please Input a String: ";
		cin >> input;
		
	simmon.len = input.length();
	
	
	
	
	system("Pause");
	return 0;
}

[salem c]

Perhaps like so.

#include<iostream>
#include<string>
#include<cmath> //!! not math.h
using namespace std;

class squareCipher{
private:
    int width;
    int height;
    string s;

public:
    squareCipher(const string &s_) {
        s = s_;
        int len = s.length();
        width=floor(sqrt(len)); //rows
        height=ceil(sqrt(len)); //columns
    }
    void print() {
        for(int i=0;i<height;i++) {
            for(int j=0;j<height;j++) {
                int k=(j*height)+i;
                cout<<s[k];
            }
            cout<<"\n";
        }
    }
};

int main() {
    squareCipher bob("hello");
    bob.print();
}

Watch out for out of bound accesses on your string indexing when you print.

[LucasArroyo]

Thank you @salem c. Big help to someone like me who is new. :) I'll learned from it a lot.

[doug4]

Shouldn't the inner loop increment up to width?