I have some errors in my program

#include using namespace std;

int main() {

cout << "Enter no of row of matrix : "; int row; cin >> row;

cout << "Enter no of column of matrix:"; int col; cin >> col;

float a[row][col], b[row][col]; // error

//taking input of matrix1 cout << "Enter the elements of matrix 1-->" << endl; for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

cin >> a[i][j];

}

}

//taking input of matrix2 cout << "Enter the elements of matrix 2-->" << endl; for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

cin >> b[i][j];

}

}

float pro[row][col]; // error

for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

pro[i][j] = 0;

}

}

//multiplying the given matrix for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

for (int k = 0; k < col; k++) { pro[i][j] += a[i][k] * b[k][j]; }

}

}

cout << "---matrix 1---" << endl; for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

cout << a[i][j] << " ";

} cout << endl;

}

cout << "---matrix 2---" << endl; for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

cout << b[i][j] << " ";

} cout << endl;

}

cout << "---product---" << endl; for (int i = 0; i < row; i++) {

for (int j = 0; j < col; j++) {

cout << pro[i][j] << " ";

} cout << endl;

}