v编写程序，求双精度类型量-12.0、234.0的绝对值。\2.cpp
...............................................\2.dsp
...............................................\2.dsw
...............................................\2.ncb
...............................................\2.opt
...............................................\2.plg
...............................................\Debug\2.exe
...............................................\.....\2.obj
...............................................\.....\2.pdb
...............................................\.....\vc60.pdb
...............................................\Debug
v编写程序，求双精度类型量-12.0、234.0的绝对值。