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i have written a class to add matrices ,line 51 of the

code has problem.

debugger is showing segmentation fault there .

please suggest the correction.

```
#include <iostream>
using namespace std;
class mat
{
int row;
int column;
double **a;
public:
mat(){}
mat(int r,int c)
{
row = r;
column = c;
a = new double *[r];
for (int i = 0;i < r;i++)
{
a[i] = new double [c];
}
}
void getvalue(void)
{
for (int i = 0;i < row;i++)
{
cout << "enter " << i << "th row" << endl;
for (int j = 0;j < column;j++)
{
cin >> a[i][j];
}
}
}
void putvalue(void)
{
cout << "" << endl;
for (int i = 0;i < row;i++)
{
for (int j = 0;j < column;j++)
{
cout << a[i][j] << " ";
}
cout << "" << endl;
}
}
//define addition opertor
mat operator+(mat p)
{
mat temp;
for (int i = 0;i < p.row;i++)
{
for (int j = 0;j < p.column;j++)
{
temp.a[i][j] = a[i][j] + p.a[i][j];
}
}
return temp;
}
};
int main()
{
int r,c;
cout << "enter number of rows and columns " << endl;
cin >> r >> c;
mat a(r,c),b(r,c),d(r,c);
a.getvalue();
b.getvalue();
d = a + b;
d.putvalue();
return 0;
}
```

*Edited
by smrati.katiyar*: n/a