problem in two dimensional array

[mohammed1112]

hi

help me please , I have a big problem in arrays

i want to exchange rows with rows like this

A B C D E
F G H I J
K L M N O
P Q R S T
U V W X Y

to

F G H I J
A B C D E
K L M N O
P Q R S T
U V W X Y

here is my code :

#include<iostream>
using namespace::std;

int main()
{
	int x;

	char Array[5][5]={{'A','B','C','D','E'},
	                  {'F','G','H','I','J'},
	                  {'K','L','M','N','O'},
                      {'P','Q','R','S','T'},
	                  {'U','V','W','X','Y'}};
	
	for(int row=0;row<5;row++)
	{
	for(int colom=0;colom<5;colom++)
	{
		
		
		x=Array[1][colom];
		Array[0][colom]=Array[1][colom];
		Array[1][colom]=x;

		


		cout<< Array[row][colom] << " ";
	}
	 
		cout<<endl;
	}
	
	return 0;
}

my code give output like this :

F G H I J
F G H I J
K L M N O
P Q R S T
U V W X Y

[AbstractionAnon]

Your logic at lines 20-22 is messed up. You save array[1][c] into x.
You then overwrite array[0][c] with array[1][c].
You just lost the value you had in array[0][c].

You have the right idea with the temp variable, you're just putting the wrong value in it.

    x=Array[0][colom];  // save the value we're about to overwrite
    Array[0][colom]=Array[1][colom];  // go ahead and overwrite
    Array[1][colom]=x;  // store the saved value 

BTW, you're executing the row swap 5 times. The second and forth times you do it, you're putting the array back the way it was initially. You only need to do the row swap once.

[mohammed1112]

mmmm , but i have same problem
the output is

F G H I J
F G H I J
K L M N O
P Q R S T
U V W X Y

:(

[TheGrayWolf]

Well, here is another version

#include <iostream>


int main()
{
    int x, y, i, j;

    char Array[5][5] = {{'A','B','C','D','E'},
                        {'F','G','H','I','J'},
                        {'K','L','M','N','O'},
                        {'P','Q','R','S','T'},
	                {'U','V','W','X','Y'}};

    // Swap here
    for (i = 0; i < 5; i++)
   {
        x = Array[1][i];
        y = Array[0][i];

  	Array[1][i] = y;
	Array[0][i] = x;
    }

    // Print here
    for (i = 0; i < 5; ++i)
   {
       for (j = 0; j < 5; ++j)
       {
           std::cout << " " << Array[i][j];
       }

           std::cout << std::endl;
       }

    return 0;
}

[mohammed1112]

Thank you very much , :)