View Compilation Error

0_0_21638949_9411.cpp: In function 'int main()':
0_0_21638949_9411.cpp:77:26: error: 'coun' was not declared in this scope
    cout << "Case #" << ++coun << ":" << endl;
                          ^
0_0_21638949_9411.cpp:80:26: error: 'coun' was not declared in this scope
    cout << "Case #" << ++coun << ":" << endl;
                          ^