ftoa函数c语言,C++ 类型转换 atoi atol atof , itoa ftoa char
http://blog.163.com/chen_dawn/blog/static/1125063201011203536852/1.atoiintatoi(constchar*str);ConvertstringtointegerParsestheCstringstrinterpretingitscontentasanintegralnumber,whichisreturnedasanintva