View Compilation Error

0_0_20625801_15154.c: In function 'main':
0_0_20625801_15154.c:8:2: error: unknown type name 'bool'
  bool j;
  ^
0_0_20625801_15154.c:13:5: error: 'false' undeclared (first use in this function)
   j=false;
     ^
0_0_20625801_15154.c:13:5: note: each undeclared identifier is reported only once for each function it appears in
0_0_20625801_15154.c:20:7: error: 'true' undeclared (first use in this function)
     j=true; 
       ^