Question

Create a square array and fill out as shown below. Use a nested loop for this step.

1	3	5	7	9
2	4	6	8	10
3	5	7	9	11
4	6	8	10	12
5	7	9	11	13

Then create two 1D arrays to with row and column sum of the items. You have then

15

25

35

45

55

for the column sum, and

25

30

35

40

45

for the row sum.

Print row and column sum arrays on screen.

C++ Programming

Answer 1

main.cpp :

//header files
#include <iostream>
using namespace std;
//main method
int main()
{
//declaring square array
int squareArray[5][5];
//declaring 1d array to store row sum
int rowSum[5];
//declaring 1d array to store column sum
int columnSum[5];
int k=1;
//using for loop
for(int i=0;i<5;i++)//this loop is used for number of rows
{
for(int j=0;j<5;j++)//this loop is used for number of columns
{
squareArray[i][j]=k;//store value of k in i,j
k=k+2;//increment k by 2
}
k=i+2;//assign i+2 to the k
}
//using for loop find row sum
for(int i=0;i<5;i++)//this loop is used for number of rows
{ int rSum=0,cSum=0;
for(int j=0;j<5;j++)//this loop is used for number of columns
{
rSum=rSum+squareArray[i][j];
cSum=cSum+squareArray[j][i];
}
//store row sum in the array
rowSum[i]=rSum;
columnSum[i]=cSum;
}
cout<<"Square array :"<<endl;
//print array elements
for(int i=0;i<5;i++)//this loop is used for number of rows
{
for(int j=0;j<5;j++)//this loop is used for number of columns
{
cout<<squareArray[i][j]<<" ";//print each array element
}
cout<<endl;//jused for new line
}
cout<<"Column sum :"<<endl;
//using for loop print column sum
for(int i=0;i<5;i++)
{
cout<<columnSum[i]<<" ";//print each column sum
}
cout<<endl;//used for new line
cout<<"Row sum :"<<endl;
//using for loop print row sum
for(int i=0;i<5;i++)
{
cout<<rowSum[i]<<" ";//print each row sum
}
return 0;
}

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Output :