View Compilation Error

0_0_13562174_23865.cpp
0_0_13562174_23865.cpp(8) : error C2668: “sqrt”: 对重载函数的调用不明确
        VC2013\INCLUDE\math.h(1251): 可能是“long double sqrt(long double) throw()”
        VC2013\INCLUDE\math.h(1135): 或       “float sqrt(float) throw()”
        VC2013\INCLUDE\math.h(521): 或       “double sqrt(double)”
        尝试匹配参数列表“(int)”时
0_0_13562174_23865.cpp(27) : error C2059: 语法错误:“while”
0_0_13562174_23865.cpp(28) : error C2143: 语法错误 : 缺少“;”(在“{”的前面)
0_0_13562174_23865.cpp(28) : error C2447: “{”: 缺少函数标题(是否是老式的形式表?)
0_0_13562174_23865.cpp(41) : error C2059: 语法错误:“return”
0_0_13562174_23865.cpp(42) : error C2059: 语法错误:“}”
0_0_13562174_23865.cpp(42) : error C2143: 语法错误 : 缺少“;”(在“}”的前面)