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View Compilation Error

0_0_39400265_504.c:7:1: error: unknown type name 'bool'
    7 | bool judge(char* str)
      | ^~~~
0_0_39400265_504.c:3:1: note: 'bool' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
    2 | #include<string.h>
  +++ |+#include <stdbool.h>
    3 | 
0_0_39400265_504.c: In function 'judge':
0_0_39400265_504.c:15:32: error: 'false' undeclared (first use in this function)
   15 |                         return false;
      |                                ^~~~~
0_0_39400265_504.c:15:32: note: 'false' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
0_0_39400265_504.c:15:32: note: each undeclared identifier is reported only once for each function it appears in
0_0_39400265_504.c:18:16: error: 'true' undeclared (first use in this function)
   18 |         return true;
      |                ^~~~
0_0_39400265_504.c:18:16: note: 'true' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
0_0_39400265_504.c: In function 'main':
0_0_39400265_504.c:26:17: error: unknown type name 'bool'
   26 |                 bool flag = judge(str);
      |                 ^~~~
0_0_39400265_504.c:26:17: note: 'bool' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
0_0_39400265_504.c:27:29: error: 'true' undeclared (first use in this function)
   27 |                 if (flag == true)
      |                             ^~~~
0_0_39400265_504.c:27:29: note: 'true' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
0_0_39400265_504.c:30:39: error: expected ';' before '}' token
   30 |                         printf("NO\n")
      |                                       ^
      |                                       ;
   31 |         }
      |         ~                              


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