fork download

copy

stack<int>s1;
    s1.push(source);
    while(!s1.empty())
    {
        x=s1.top();
        cout<<x<<endl;
        s1.pop();
        arra[x] = 1;   // array is for visited purpose and is intitalized 0 before
        for(i = 1;i <= 5;++i)
        {
            if(arr[x][i] == 1&&arra[i] != 1){         // array is for adjacency matrix
                s1.push(i);
                //cout<<i<<"f"<<endl;
            }
        }
    }

prog.cpp:1:1: error: 'stack' does not name a type
 stack<int>s1;
 ^
prog.cpp:2:5: error: 's1' does not name a type
     s1.push(source);
     ^
prog.cpp:3:5: error: expected unqualified-id before 'while'
     while(!s1.empty())
     ^

Standard output is empty