#include
using namespace std;
bool canPlace(char board[][100],int row,int col,int n){
///Row mein queen to nahi h
for(int i=0;i<n;i++){
if(board[row][i]=='Q'){
return false;
}
}
///Col mein queen to nahi h
for(int i=0;i<n;i++){
if(board[i][col]=='Q'){
return false;
}
}
/// Diagonals
///Top Left
int i=row,j=col;
while(i>=0&&j>=0){
if(board[i][j]=='Q'){
return false;
}
i--;
j--;
}
///Top Right
i=row,j=col;
while(i>=0 && j<n){
if(board[i][j]=='Q'){
return false;
}
i--;
j++;
}
return true;
}
bool solveNQueen(char board[][100],int n,int row){
if(row==n){
///Print the board
for(int x=0;x<n;x++){
for(int y=0;y<n;y++){
cout<<board[x][y]<<" ";
}
cout<<endl;
}
return true;
}
///Rec Case
///Try to place the queen in the current row
for(int pos=0;pos<n;pos++){
if(canPlace(board,row,pos,n)){
board[row][pos]='Q';
bool agliQueenRakhPayeKya = solveNQueen(board,n,row+1);
if(agliQueenRakhPayeKya==true){
return true;
}
board[row][pos]='.';
}
}
///Backtracking
return false;
}
int main(){
char board[100][100];
int n;
cin>>n;
for(int x=0;x<n;x++){
for(int y=0;y<n;y++){
board[x][y]='.';
}
}
solveNQueen(board,n,0);
return 0;
}
My test cases are getting fail please correct my code where i went wrong