View Compilation Error

0_0_8509459_29654.cpp:5: error: `main' must return `int'
0_0_8509459_29654.cpp: In function `int main(...)':
0_0_8509459_29654.cpp:12: error: invalid conversion from `unsigned char*' to `const char*'
0_0_8509459_29654.cpp:12: error:   initializing argument 1 of `size_t strlen(const char*)'
0_0_8509459_29654.cpp:13: error: invalid conversion from `unsigned char*' to `const char*'
0_0_8509459_29654.cpp:13: error:   initializing argument 1 of `size_t strlen(const char*)'