View Compilation Error

0_0_32274230_27905.c: In function 'main':
0_0_32274230_27905.c:17:19: error: expected expression before '/' token
    scanf("%d",&a);//有几个旅馆 
                   ^
0_0_32274230_27905.c:17:19: error: stray '\323' in program
0_0_32274230_27905.c:17:19: error: stray '\320' in program
0_0_32274230_27905.c:17:19: error: stray '\274' in program
0_0_32274230_27905.c:17:19: error: stray '\270' in program
0_0_32274230_27905.c:17:19: error: stray '\270' in program
0_0_32274230_27905.c:17:19: error: stray '\366' in program
0_0_32274230_27905.c:17:19: error: stray '\302' in program
0_0_32274230_27905.c:17:19: error: stray '\303' in program
0_0_32274230_27905.c:17:19: error: stray '\271' in program
0_0_32274230_27905.c:17:19: error: stray '\335' in program
0_0_32274230_27905.c:20:22: error: 'hotel' undeclared (first use in this function)
    scanf("%d %d %d",&hotel[i].number ,&hotel[i].room ,&hotel[i].price );
                      ^
0_0_32274230_27905.c:20:22: note: each undeclared identifier is reported only once for each function it appears in