View Compilation Error

0_0_6984537_6398.c: In function `main':
0_0_6984537_6398.c:7: error: `bool' undeclared (first use in this function)
0_0_6984537_6398.c:7: error: (Each undeclared identifier is reported only once
0_0_6984537_6398.c:7: error: for each function it appears in.)
0_0_6984537_6398.c:7: error: syntax error before "l"
0_0_6984537_6398.c:10: error: `l' undeclared (first use in this function)