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View Compilation Error

0_0_16784933_4608.c:21:5: error: unknown type name 'node'
     node *sons[10];
     ^
0_0_16784933_4608.c:22:5: error: expected specifier-qualifier-list before 'node'
     node()
     ^
0_0_16784933_4608.c:29:1: error: unknown type name 'node'
 node *root;
 ^
0_0_16784933_4608.c:30:1: error: unknown type name 'node'
 node *nownode,*newnode;
 ^
0_0_16784933_4608.c: In function 'Insert':
0_0_16784933_4608.c:35:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i = 0; i < lens; i++)
     ^
0_0_16784933_4608.c:35:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_16784933_4608.c:38:19: error: request for member 'sons' in something not a structure or union
         if(nownode->sons[m] != NULL)
                   ^
0_0_16784933_4608.c:40:30: error: request for member 'sons' in something not a structure or union
             nownode = nownode->sons[m];
                              ^
0_0_16784933_4608.c:41:20: error: request for member 'num' in something not a structure or union
             nownode->num++;
                    ^
0_0_16784933_4608.c:45:23: error: 'new' undeclared (first use in this function)
             newnode = new node;
                       ^
0_0_16784933_4608.c:45:23: note: each undeclared identifier is reported only once for each function it appears in
0_0_16784933_4608.c:45:27: error: expected ';' before 'node'
             newnode = new node;
                           ^
0_0_16784933_4608.c:46:20: error: request for member 'num' in something not a structure or union
             newnode->num++;
                    ^
0_0_16784933_4608.c:47:20: error: request for member 'sons' in something not a structure or union
             nownode->sons[m] = newnode;
                    ^
0_0_16784933_4608.c:51:12: error: request for member 'no' in something not a structure or union
     nownode->no = num;
            ^
0_0_16784933_4608.c: In function 'Find':
0_0_16784933_4608.c:57:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i = 0;i < lens;i++)
     ^
0_0_16784933_4608.c:60:19: error: request for member 'sons' in something not a structure or union
         if(nownode->sons[m] == NULL)
                   ^
0_0_16784933_4608.c:62:26: error: request for member 'sons' in something not a structure or union
         nownode = nownode->sons[m];
                          ^
0_0_16784933_4608.c:64:15: error: request for member 'no' in something not a structure or union
     if(nownode->no != -1)
               ^
0_0_16784933_4608.c:65:22: error: request for member 'no' in something not a structure or union
         ++res[nownode->no];
                      ^
0_0_16784933_4608.c: At top level:
0_0_16784933_4608.c:68:10: error: unknown type name 'node'
 void del(node*root)
          ^
0_0_16784933_4608.c: In function 'main':
0_0_16784933_4608.c:100:16: error: 'new' undeclared (first use in this function)
         root = new node;
                ^
0_0_16784933_4608.c:100:20: error: expected ';' before 'node'
         root = new node;
                    ^
0_0_16784933_4608.c:103:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i = 0;i < n;i++)
         ^
0_0_16784933_4608.c:108:17: error: redefinition of 'i'
         for(int i = 0;i < m;i++)
                 ^
0_0_16784933_4608.c:103:17: note: previous definition of 'i' was here
         for(int i = 0;i < n;i++)
                 ^
0_0_16784933_4608.c:108:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i = 0;i < m;i++)
         ^
0_0_16784933_4608.c:111:13: error: expected expression before '/' token
             //change(a[i]);
             ^
0_0_16784933_4608.c:114:17: error: redefinition of 'i'
         for(int i = 0;i < n;i++)
                 ^
0_0_16784933_4608.c:108:17: note: previous definition of 'i' was here
         for(int i = 0;i < m;i++)
                 ^
0_0_16784933_4608.c:114:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i = 0;i < n;i++)
         ^


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