Input numbers in 2d array and find the sum of each column in C++
Two Dimensional Array - Question 6
In this question, we will see how to input numbers in a 3X3 integer matrix (2d array) and find the sum of each column separately in C++ programming. To know more about two dimensional array click on the two dimensional array lesson.
Q6) Write a program in C++ to input numbers in a 3X3 integer matrix (2d array) and find the sum of each column separately.
Program
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int a[3][3], r,c,cs;
cout<<"Enter 9 numbers\n";
for(r=0; r<3; r++)
{
for(c=0; c<3; c++)
{
cin>>a[r][c];
}
}
for(r=0; r<3; r++)
{
cs=0;
for(c=0; c<3; c++)
{
cout<<a[r][c]<<" ";
cs=cs+a[c][r];
}
cout<<" Column Sum = "<<cs<<endl;
}
return 0;
}Output
Enter 9 numbers 18 12 72 10 15 45 38 5 64 18 12 72 Column Sum = 66 10 15 45 Column Sum = 32 38 5 64 Column Sum = 181
