He has realized that he _____ his wallet in the shop. [ ]

A. left

B. forgot

C. borrowed

D. sold

有下列函数定义： fun(float h) { printf("%f,%f\n",h,h*h);} 该函数的类型是( )。

A．int类型

B．float类型

C．void类型

D．函数无类型说明，定义有错