View Compilation Error

0_0_7781013_31450.c:1:21: iostream: No such file or directory
0_0_7781013_31450.c:2:20: cstdlib: No such file or directory
0_0_7781013_31450.c:5: error: syntax error before "namespace"
0_0_7781013_31450.c: In function `get_phi':
0_0_7781013_31450.c:20: error: 'for' loop initial declaration used outside C99 mode
0_0_7781013_31450.c: In function `check':
0_0_7781013_31450.c:36: error: 'for' loop initial declaration used outside C99 mode
0_0_7781013_31450.c: In function `main':
0_0_7781013_31450.c:65: error: syntax error before '/' token