View Compilation Error

724821_0_0_293.c: In function `main':
724821_0_0_293.c:34: error: syntax error before "long"
724821_0_0_293.c:39: error: `str' undeclared (first use in this function)
724821_0_0_293.c:39: error: (Each undeclared identifier is reported only once
724821_0_0_293.c:39: error: for each function it appears in.)