View Compilation Error

0_0_2134766_20841.c:5: error: syntax error before "hash"
0_0_2134766_20841.c: In function `main':
0_0_2134766_20841.c:22: error: `bool' undeclared (first use in this function)
0_0_2134766_20841.c:22: error: (Each undeclared identifier is reported only once
0_0_2134766_20841.c:22: error: for each function it appears in.)
0_0_2134766_20841.c:25: error: 'for' loop initial declaration used outside C99 mode
0_0_2134766_20841.c:30: error: `true' undeclared (first use in this function)