View Compilation Error

0_0_3823818_30851.c:1:18: vector: No such file or directory
0_0_3823818_30851.c:2:20: iostream: No such file or directory
0_0_3823818_30851.c:3:16: cmath: No such file or directory
0_0_3823818_30851.c:7: error: syntax error before "namespace"
0_0_3823818_30851.c: In function `sieve':
0_0_3823818_30851.c:23: error: `prime' undeclared (first use in this function)
0_0_3823818_30851.c:23: error: (Each undeclared identifier is reported only once
0_0_3823818_30851.c:23: error: for each function it appears in.)
0_0_3823818_30851.c: In function `main':
0_0_3823818_30851.c:62: error: `prime' undeclared (first use in this function)
0_0_3823818_30851.c:64: error: syntax error before '/' token