View Compilation Error

0_0_8872274_15945.c:4: error: syntax error before "ok"
0_0_8872274_15945.c: In function `main':
0_0_8872274_15945.c:13: error: `true' undeclared (first use in this function)
0_0_8872274_15945.c:13: error: (Each undeclared identifier is reported only once
0_0_8872274_15945.c:13: error: for each function it appears in.)