View Compilation Error

0_0_39143796_14823.c: In function 'main':
0_0_39143796_14823.c:5:5: error: unknown type name 'bool'
    5 |     bool fst=true;
      |     ^~~~
0_0_39143796_14823.c:2:1: note: 'bool' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
    1 | #include <stdio.h>
  +++ |+#include <stdbool.h>
    2 | int main(){
0_0_39143796_14823.c:5:14: error: 'true' undeclared (first use in this function)
    5 |     bool fst=true;
      |              ^~~~
0_0_39143796_14823.c:5:14: note: 'true' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
0_0_39143796_14823.c:5:14: note: each undeclared identifier is reported only once for each function it appears in
0_0_39143796_14823.c:11:17: error: 'false' undeclared (first use in this function)
   11 |             fst=false;
      |                 ^~~~~
0_0_39143796_14823.c:11:17: note: 'false' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?