View Compilation Error

0_0_3783794_12481.cpp:30: error: ISO C++ forbids declaration of `intmain' with no type
0_0_3783794_12481.cpp: In function `int intmain()':
0_0_3783794_12481.cpp:40: error: `return0' undeclared (first use this function)
0_0_3783794_12481.cpp:40: error: (Each undeclared identifier is reported only once for each function it appears in.)