View Compilation Error

0_0_20705372_9608.c: In function 'main':
0_0_20705372_9608.c:10:5: error: unknown type name 'bool'
     bool fou[1002];
     ^
0_0_20705372_9608.c:22:20: error: 'false' undeclared (first use in this function)
             fou[i]=false;
                    ^
0_0_20705372_9608.c:22:20: note: each undeclared identifier is reported only once for each function it appears in
0_0_20705372_9608.c:63:16: error: 'true' undeclared (first use in this function)
         fou[s]=true;
                ^