View Compilation Error

0_0_19437144_30637.c:65:1: error: expected identifier or '(' before '/' token
 // check in
 ^
0_0_19437144_30637.c: In function 'have_in':
0_0_19437144_30637.c:76:8: error: 'cache' undeclared (first use in this function)
    if (cache[u] == 0) {
        ^
0_0_19437144_30637.c:76:8: note: each undeclared identifier is reported only once for each function it appears in
0_0_19437144_30637.c: In function 'tanjar':
0_0_19437144_30637.c:91:3: error: expected expression before '/' token
   //no visited
   ^
0_0_19437144_30637.c:103:10: error: 'cache' undeclared (first use in this function)
   memset(cache, 0, sizeof(int) * 1000);
          ^
0_0_19437144_30637.c:114:4: error: expected expression before '/' token
    //printf("%d ", v);
    ^
0_0_19437144_30637.c:116:3: error: expected expression before '/' token
   //printf("\n");
   ^
0_0_19437144_30637.c: In function 'main':
0_0_19437144_30637.c:142:5: error: expected expression before '/' token
     //not visited.
     ^