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twoDarray.cpp
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#include <iostream>
using namespace std;
int main() {
//1st way
// int arr[3][3]={
// {1,2,3},
// {4,5,6},
// {7,8,9}
// };
//you can skip number of rows
//2nd way
// int arr[][3]={
// {1,2,3},
// {4,5,6},
// {7,8,9}
// };
// int arr[][3]={
// {1,2,3},
// {4,5,6},
// {7,8}
// };
// for(int row=0;row<3;row++){
// for(int col=0;col<3;col++){
// cout<<arr[row][col]<<" ";
// }
// cout<<endl;
// }
int arr[100][100];
int rows,cols;
cin>>rows>>cols;
for(int i=0;i<rows;i++){
for(int j=0;j<cols;j++){
cout<<arr[i][i]<<" ";
}
cout<<endl;
}
return 0;
}