View Compilation Error

0_0_8428587_843.c:2: error: syntax error before '/' token
0_0_8428587_843.c:5: error: `child' undeclared here (not in a function)
0_0_8428587_843.c:5: error: syntax error before ')' token
0_0_8428587_843.c:10: error: variable-size type declared outside of any function
0_0_8428587_843.c:10: error: variable-sized object may not be initialized
0_0_8428587_843.c:10: error: conflicting types for 'a'
0_0_8428587_843.c:2: error: previous declaration of 'a' was here
0_0_8428587_843.c:10: error: `t' undeclared here (not in a function)
0_0_8428587_843.c:10: error: syntax error before '}' token
0_0_8428587_843.c: In function `heapsort':
0_0_8428587_843.c:14: error: syntax error before '/' token
0_0_8428587_843.c:14: error: syntax error before ')' token