View Compilation Error

0_0_6745360_20581.cpp:6: error: variable or field `build' declared void
0_0_6745360_20581.cpp:6: error: `n' was not declared in this scope
0_0_6745360_20581.cpp:7: error: expected `,' or `;' before '{' token
0_0_6745360_20581.cpp: In function `int main()':
0_0_6745360_20581.cpp:41: error: `build' cannot be used as a function