View Compilation Error

65786_0_3213.cpp:9: error: `main' must return `int'
65786_0_3213.cpp: In function `int main(...)':
65786_0_3213.cpp:21: error: `accumate' undeclared (first use this function)
65786_0_3213.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)