View Compilation Error

121059_0_9040.cpp: In function `int main()':
121059_0_9040.cpp:19: error: `beta' undeclared (first use this function)
121059_0_9040.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
121059_0_9040.cpp:20: error: `temp1' undeclared (first use this function)
121059_0_9040.cpp:21: error: `temp2' undeclared (first use this function)