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#include <bits/stdc++.h>
using namespace std;
 
int main() {
        	int a[]={12,11,-13,-5,6,-7,5,-3,-6}
            int i,x,n=9;
            vector<int>arr;
            for(i=0;i<n;i++)
        {
            cin>>a[i];
            x=a[i];
            if(x>=0)
            arr.push_back(x);
        }
        for(i=0;i<n;i++)
        {
            x=a[i];
            if(x<0)
            arr.push_back(x);
        }
        for(i=0;i<n;i++)
        cout<<arr[i]<<" ";
        cout<<endl;
 
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:6:13: error: expected ‘,’ or ‘;’ before ‘int’
             int i,x,n=9;
             ^~~
prog.cpp:8:17: error: ‘i’ was not declared in this scope
             for(i=0;i<n;i++)
                 ^
prog.cpp:8:23: error: ‘n’ was not declared in this scope
             for(i=0;i<n;i++)
                       ^
prog.cpp:11:13: error: ‘x’ was not declared in this scope
             x=a[i];
             ^
prog.cpp:15:13: error: ‘i’ was not declared in this scope
         for(i=0;i<n;i++)
             ^
prog.cpp:15:19: error: ‘n’ was not declared in this scope
         for(i=0;i<n;i++)
                   ^
prog.cpp:17:13: error: ‘x’ was not declared in this scope
             x=a[i];
             ^
prog.cpp:21:13: error: ‘i’ was not declared in this scope
         for(i=0;i<n;i++)
             ^
prog.cpp:21:19: error: ‘n’ was not declared in this scope
         for(i=0;i<n;i++)
                   ^

Standard output is empty