View Compilation Error

94135_0_142.cpp: In function `int main()':
94135_0_142.cpp:5: error: `error' undeclared (first use this function)
94135_0_142.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
94135_0_142.cpp:8: error: `sum' undeclared (first use this function)
94135_0_142.cpp:11: error: expected `;' before ':' token
94135_0_142.cpp:12: error: stray '\' in program