Mega Code Archive
Define and initiate a two-dimensional array
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#include <iostream>
#include <iomanip>
using namespace std;
int matrix[3][5] = { { 215, 314, 216, 112, 8 },
{ 119, 217, 214, 111, 4 },
{ 61, 115, 315, 316, 118 } };
int rowsum[3];
int colsum[5];
int matrixsum( int arr2D[][5], int vlen, int rsum[], int csum[]);
int main()
{
cout << "Testing the function matrixsum()." << endl;
int totalsum = matrixsum( matrix, 3, rowsum, colsum);
cout << "The matrix with the sums of rows and columns:" << endl;
int i,j;
for( i = 0 ; i < 3 ; ++i)
{ // matrix with row sums.
for( j = 0 ; j < 5 ; ++j)
cout << setw(8) << matrix[i][j];
cout << " | " << setw(8) << rowsum[i] << endl;
}
cout << endl;
for( j = 0 ; j < 5 ; ++j )
cout << setw(8) << colsum[j];
cout << " | " << setw(8) << totalsum << endl;
return 0;
}
int matrixsum( int v[][5], int len, int rsum[], int csum[])
{
int ro, co; // Row and column index
for( ro = 0 ; ro < len ; ++ro) // To compute row sums
{
rsum[ro] = 0;
for( co = 0 ; co < 5 ; ++co)
rsum[ro] += v[ro][co];
}
for(co = 0 ; co < 5 ; ++co) // Compute column sums
{
csum[co] = 0;
for( ro = 0 ; ro < len ; ++ro)
csum[co] += v[ro][co];
}
return (rsum[0] + rsum[1] + rsum[2]); // Total sum =
} // sum of row sums.
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