View Compilation Error

0_0_24586420_21191.c:3:1: error: expected identifier or '(' before '/' token
 //hdu 1114
 ^
0_0_24586420_21191.c: In function 'main':
0_0_24586420_21191.c:24:13: error: 'f' undeclared (first use in this function)
             f[i]=inf;
             ^
0_0_24586420_21191.c:24:13: note: each undeclared identifier is reported only once for each function it appears in