View Compilation Error

0_0_3899241_20094.cpp: In function `void work()':
0_0_3899241_20094.cpp:22: error: ISO C++ forbids declaration of `f' with no type
0_0_3899241_20094.cpp:33: error: invalid conversion from `int*' to `int'
0_0_3899241_20094.cpp:36: error: invalid conversion from `int*' to `int'
0_0_3899241_20094.cpp:3: error: too many arguments to function `int num(char)'
0_0_3899241_20094.cpp:38: error: at this point in file
0_0_3899241_20094.cpp:38: error: `max' undeclared (first use this function)
0_0_3899241_20094.cpp:38: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3899241_20094.cpp: In function `int max(int, int, int)':
0_0_3899241_20094.cpp:56: error: `int max(int, int, int)' used prior to declaration