View Compilation Error

0_0_33192733_32207.c: In function 'main':
0_0_33192733_32207.c:8:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for (int i = 0; i < tests; i++)
  ^
0_0_33192733_32207.c:8:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_33192733_32207.c:10:3: error: unknown type name 'bool'
   bool flag = true;
   ^
0_0_33192733_32207.c:10:15: error: 'true' undeclared (first use in this function)
   bool flag = true;
               ^
0_0_33192733_32207.c:10:15: note: each undeclared identifier is reported only once for each function it appears in
0_0_33192733_32207.c:13:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j = 0; j < colors; j++)
   ^
0_0_33192733_32207.c:17:12: error: 'false' undeclared (first use in this function)
     flag = false;
            ^