View Compilation Error

0_0_33698026_10635.cpp:19:16: error: 'i' has not been declared
 int calc(int n,i
                ^
0_0_33698026_10635.cpp:19:16: error: expected ',' or '...' at end of input
0_0_33698026_10635.cpp:19:16: error: expected ')' at end of input
0_0_33698026_10635.cpp:19:16: error: expected initializer at end of input