View Compilation Error

1065667_0_0_28983.cpp:3: error: `main' must return `int'
1065667_0_0_28983.cpp: In function `int main(...)':
1065667_0_0_28983.cpp:9: error: `flushall' undeclared (first use this function)
1065667_0_0_28983.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)