0_0_38406167_16602.cpp: In function 'int main()':
0_0_38406167_16602.cpp:5:5: error: 'doublen' was not declared in this scope
doublen, a, b, c;
^
0_0_38406167_16602.cpp:5:14: error: 'a' was not declared in this scope
doublen, a, b, c;
^
0_0_38406167_16602.cpp:5:17: error: 'b' was not declared in this scope
doublen, a, b, c;
^
0_0_38406167_16602.cpp:5:20: error: 'c' was not declared in this scope
doublen, a, b, c;
^
0_0_38406167_16602.cpp:6:12: error: 'n' was not declared in this scope
cin >> n;
^
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