View Compilation Error

39952_0_32512.cpp: In function `void build(int*, int*, int, int)':
39952_0_32512.cpp:20: error: invalid conversion from `int' to `int*'
39952_0_32512.cpp: At global scope:
39952_0_32512.cpp:28: error: `main' must return `int'
39952_0_32512.cpp: In function `int main(...)':
39952_0_32512.cpp:35: error: incompatible types in assignment of `int' to `int[20]'