#include <iostream>
using namespace std;

void CapPhat(int**& a, int sodong, int socot)
{
	a = new int* [sodong];
	for(int i = 0; i < sodong; i++)
	{
		a[i] = new int[socot];
	}
}

void NhapMang(int** a, int sodong, int socot)
{
	for(int i = 0; i < sodong; i++)
	{
		for(int j = 0; j < socot; j++)
		{
			cout<<"Nhap vao a["<<i<<"]["<<j<<"]:\n";
			cin>>a[i][j];
		}
	}
}

void XuatMang(int** a, int sodong, int socot)
{
	for(int i = 0; i < sodong; i++)
	{
		for(int j = 0; j < socot; j++)
		{
			cout<<a[i][j]<<"\t";
		}
		cout<<endl;
	}
}

void ThuHoi(int*** a, int sodong)
{
	for(int i = 0; i < sodong; i++)
	{
		delete (*a)[i]; 
	}
	delete [](*a);
}

void XoaDong(int**&a, int& sodong, int socot, int vitrixoa)
{
	for(int i = vitrixoa; i < sodong - 1; i++)
	{
		for(int j = 0; j < socot; j++)
		{
			a[i][j] = a[i + 1][j];
		}
	}
	delete[]a[sodong - 1];
	sodong--;
	// Dùng realloc để resize ô nhớ đã cấp phát
	a = (int**) realloc(a, sodong * sizeof(int));
}

void XoaCot(int**& a, int sodong, int& socot, int vitrixoa)
{
	for(int i = 0; i < sodong ; i++)
	{
		for(int j = vitrixoa; j < socot - 1; j++)
		{
			a[i][j] = a[i][j + 1];
		}
	}
	socot--;
	for(int i = 0; i < sodong; i++)
	{
		a[i] = (int*)realloc(a[i], socot * sizeof(int));
	}
}

void ThemDong(int**& a, int& sodong, int socot, int* dongcanthem, int vitrithem)
{
	sodong++;
	a = (int**)realloc(a, sodong * sizeof(int));
	a[sodong - 1] = new int[socot];

	for(int i = sodong - 1; i > vitrithem; i--)
	{
		for(int j = 0; j  < socot; j++)
		{
			// Di dời các phần tử 
			a[i][j] = a[i - 1][j];
		}
	}
	// Gán vào vị trí thích hợp
	for(int j = 0; j < socot; j++)
	{
		a[vitrithem][j] = dongcanthem[j];
	}
}
void ThemCot(int**& a, int sodong, int& socot, int* cotcanthem, int vitrithem)
{
	socot++;
	for(int i = 0; i < sodong; i++)
	{
		a[i] = (int*)realloc(a[i], socot * sizeof(int));
	}

	// Thực hiện di dời
	for(int i = 0; i < sodong; i++)
	{
		for(int j = socot - 1; j > vitrithem; j--)
		{
			a[i][j] = a[i][j - 1];
		}
	}
	// Gán vào vị trí thích hợp
	for(int i = 0; i < sodong; i++)
	{
		a[i][vitrithem] = cotcanthem[i];
	}
}
int main()
{
	int sodong = 3, socot = 3;
	int** a = NULL;
	CapPhat(a, sodong, socot);
	NhapMang(a, sodong, socot);
	XuatMang(a, sodong, socot);


	/* Thêm dòng */
	int* dongcanthem = new int[socot];
	int vitrithem = 2;
	for(int i = 0; i < socot; i++)
	{
		cout << "Nhap phan tu thu " << i + 1 <<endl;
		cin >> dongcanthem[i];
	}
	ThemDong(a, sodong, socot, dongcanthem, vitrithem);
	cout<<endl;
	cout << "Ma tran sau khi them dong 2";
	XuatMang(a, sodong, socot);
	/* Thêm cột */
	int* cotcanthem = new int[sodong];
	vitrithem = 1;
	for(int i = 0; i < sodong; i++)
	{
		cout << "Nhap phan tu thu " << i + 1 << endl;
		cin>>cotcanthem[i];
	}
	ThemCot(a, sodong, socot, cotcanthem, vitrithem);
	cout << endl;
	cout << "Ma tran sau khi them cot 2";
	XuatMang(a, sodong, socot);
	if(a != NULL)
	{
		ThuHoi(&a, sodong);
	}

	system("pause");
	return 0;
}

Line 19: error: iostream: No such file or directory
Line 2: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace'
Line 4: error: expected ';', ',' or ')' before '&' token
In function 'NhapMang':
Line 15: error: 'for' loop initial declaration used outside C99 mode
Line 17: error: 'for' loop initial declaration used outside C99 mode
Line 19: error: 'cout' undeclared (first use in this function)
Line 19: error: (Each undeclared identifier is reported only once
Line 19: error: for each function it appears in.)
Line 20: error: 'cin' undeclared (first use in this function)
In function 'XuatMang':
Line 27: error: 'for' loop initial declaration used outside C99 mode
Line 29: error: 'for' loop initial declaration used outside C99 mode
Line 31: error: 'cout' undeclared (first use in this function)
Line 33: error: 'endl' undeclared (first use in this function)
In function 'ThuHoi':
Line 39: error: 'for' loop initial declaration used outside C99 mode
Line 41: error: subscripted value is neither array nor pointer
Line 43: error: 'delete' undeclared (first use in this function)
Line 43: error: expected expression before ']' token
t.c: At top level:
Line 46: error: expected ';', ',' or ')' before '&' token
Line 61: error: expected ';', ',' or ')' before '&' token
Line 77: error: expected ';', ',' or ')' before '&' token
Line 97: error: expected ';', ',' or ')' before '&' token
In function 'main':
Line 129: error: 'new' undeclared (first use in this function)
Line 129: error: expected ',' or ';' before 'int'
Line 131: error: 'for' loop initial declaration used outside C99 mode
Line 133: error: 'cout' undeclared (first use in this function)
Line 133: error: 'endl' undeclared (first use in this function)
Line 134: error: 'cin' undeclared (first use in this function)
Line 141: error: expected ',' or ';' before 'int'
Line 143: error: redefinition of 'i'
Line 131: error: previous definition of 'i' was here
Line 143: error: 'for' loop initial declaration used outside C99 mode