0_0_38365085_6809.cpp: In function 'int main()':
0_0_38365085_6809.cpp:5:11: error: 'cin' was not declared in this scope
while(cin >> a){
^
0_0_38365085_6809.cpp:13:9: error: 'cout' was not declared in this scope
cout <<sum << endl;
^
0_0_38365085_6809.cpp:13:23: error: 'endl' was not declared in this scope
cout <<sum << endl;
^
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