0_0_3228801_13618.c: In function `main':
0_0_3228801_13618.c:17: error: `bool' undeclared (first use in this function)
0_0_3228801_13618.c:17: error: (Each undeclared identifier is reported only once
0_0_3228801_13618.c:17: error: for each function it appears in.)
0_0_3228801_13618.c:17: error: syntax error before "sp"
0_0_3228801_13618.c:20: error: `sp' undeclared (first use in this function)
0_0_3228801_13618.c:20: error: `true' undeclared (first use in this function)
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