View Compilation Error

215113_0_26909.cpp:3: error: `main' must return `int'
215113_0_26909.cpp: In function `int main(...)':
215113_0_26909.cpp:5: error: `cont' undeclared (first use this function)
215113_0_26909.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)