View Compilation Error

2_16253_1139283_20238.c:1: error: syntax error before "for"
2_16253_1139283_20238.c:1: error: syntax error at '#' token
2_16253_1139283_20238.c: In function `main':
2_16253_1139283_20238.c:9: error: `f' undeclared (first use in this function)
2_16253_1139283_20238.c:9: error: (Each undeclared identifier is reported only once
2_16253_1139283_20238.c:9: error: for each function it appears in.)