单项选择题

以下四个程序中,完全正确的是______。

A.#include<stdio.h>
B.#include<stdio.h>
main(); main()
/*programming*/ /*/programming/*/
printf("programming!\n"); printf("programming!\n");
C.#include<stdio.h>
D.include<stdio.h>
main() main()
/*/*programming*/*/ /*programming*/
printf("programming!\n"); printf("programming!\n");