One test case not clearing

one test case not passing… pls tell whats the error in code…

#include
#include
using namespace std;

void rotate(int a[][10],int n){
for(int i=0;i<n;i++){
int start_col=0;
int end_col=n-1;
while(start_col<end_col){
swap(a[i][start_col],a[i][end_col]);
start_col++;
end_col–;
}

}

for(int i=0;i<n;i++){
	for(int j=0;j<n;j++){
		if(i<j){
			swap(a[i][j],a[j][i]);
		}
	}
}

for(int i=0;i<n;i++){
	for(int j=0;j<n;j++){
		cout<<a[i][j]<<" ";
	}
	cout<<endl;
}

}

int main(){
int arr[10][10],n;
cin>>n;

for(int i=0;i<n;i++){
	for(int j=0;j<n;j++){
		cin>>arr[i][j];
	}
}

rotate(arr,n);

return 0;

}

Check the constraints
Constraints
N < 1000
But you have restricted the size of your matrix to 10 x 10.

okay… thank you sir