View Compilation Error

0_0_26025116_6812.cpp: In function 'int main()':
0_0_26025116_6812.cpp:44:10: error: 'sld' was not declared in this scope
     sld(_);
          ^
0_0_26025116_6812.cpp:47:9: error: 'cout' was not declared in this scope
         cout<<sum[m]<<endl;
         ^
0_0_26025116_6812.cpp:47:23: error: 'endl' was not declared in this scope
         cout<<sum[m]<<endl;
                       ^