Question

Write a C++ program to find the sum of all elements of a two-dimensional array A of order M x N .

Answer 1

#include iostream.h
#include conio.h
clrscr();
int cols=10;
int rows=10;
int [] [] myArray =new int [cols] [rows];
for(int m=0;m<cols;m+);{
for(int n=0;n<rows;n++);{
myArray[m][n]=int(random(255));
}
}
for(int m=0;m<cols;m+);{
for(int n=0;n<rows;n++);{
stroke(myArray[i][j]);
point(m,n);
}
}

Answer 2

#include <iostream>

 

using std::cout;

 

int main()

{

    int array[m][n], columntotal[n] = {0}, rowtotal[m] = {0};

    int x, y, z = 1; //x & y are iterate around loops, z to fill up the array with some numbers.

    for(x = 0; x < m; ++x) //Just fill up the array with some numbers.

    {

        for(y = 0; y < n; ++y)

        {

            array[m][n] = z;

            ++z;

        }

    }

    for(x = 0; x < n; ++x) //Sum the columns.

    {

        for(y = 0; y < m; ++y)

        {

            columntotal[n] = columntotal[n] + array[m][n];

        }

    }

    for(x = 0; x < n; ++x) //Output of each column.

    {

        cout << columntotal[n] << "\n";

    }

    return 0;

}