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something wrong with my array

bestnone (9)
trying to solve this problem to display my 3X3 input to - 128 


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#include <iostream>
#include <iomanip>
#include <cmath>
#include <cstdlib>
using namespace std;

double shifted_block(double a[3][3]);

int main ()
	{
		
// input number in 3X3 array
		
	double a[3][3];
	
	double zero_zero;
	*(a+0)[0] = zero_zero;
	double zero_one;
	*(a+0)[1] = zero_one;
	double zero_two;
	*(a+0)[2] = zero_two;
	
	cout << "Enter 1st row" << endl;
	cin >> zero_zero >> zero_one >> zero_two;
	
	
	double one_zero;
	*(a+1)[0] = one_zero;
	double one_one;
	*(a+1)[1] = one_one;
	double one_two;
	*(a+1)[2] = one_two;
	
	cout << "Enter 2nd row" << endl;
	cin >> one_zero >> one_one >> one_two;
	
	
	double two_zero;
	*(a+2)[0] = two_zero;
	double two_one;
	*(a+2)[1] = two_one;
	double two_two;
	*(a+2)[2] = two_two;
	
	cout << "enter 3nd row" << endl;
	cin >> two_zero >> two_one >> two_two;
	
	
	cout << zero_zero << " " << zero_one << " " << zero_two << " " << endl;
	cout << one_zero  << " " << one_one  << " " << one_two  << " " << endl;
	cout << two_zero << " " << two_one << " " << two_two << " " << endl;

//display out
				
	cout << shifted_block (zero_zero) << endl;
	
	return 0;
		
	}

// to minus 128 of the value input
		
double shifted_block(double a[3][3])
{
	
		
	for (int countrow = 0; countrow < 3; countrow++) {
		
    for (int countcolumn = 0; countcolumn < 3; countcolumn++){
	    
    return a[countrow][countcolumn] = a[countrow][countcolumn] - 128;
         
                
    }
    
}


}

Last edited on
jsmith (5804)
You are assigning uninitialized variables to the various positions in the array, and only then
initializing the variables....
bestnone (9)
any example to understand better?
Disch (13742)
1
2
 
	double zero_zero;  // you never give zero_zero a value -- it's unitialized
	*(a+0)[0] = zero_zero;  // what are you assigning to *(a+0)[0] ?  you never set zero_zero to anything
Last edited on
bestnone (9)
so this is like i must input zero_zero i only can get the value but what want is i want to input any value not in code but in cmd.

it have line 55 : error cannot convert 'double' to 'double' <*>[3]' for argument '1' to 'double shifted_block<double <*>[3]>'
Last edited on
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