View Compilation Error

0_0_33477194_4036.cpp: In function 'int main()':
0_0_33477194_4036.cpp:34:7: error: 'cal2' was not declared in this scope
  cal2();
       ^
0_0_33477194_4036.cpp:35:7: error: 'cal1' was not declared in this scope
  cal1();
       ^