View Compilation Error

202194_0_21881.c:1:19: iostream: No such file or directory
202194_0_21881.c:2:17: string: No such file or directory
202194_0_21881.c:3:16: cmath: No such file or directory
202194_0_21881.c:4: error: syntax error before "namespace"
202194_0_21881.c: In function `main':
202194_0_21881.c:8: error: `cin' undeclared (first use in this function)
202194_0_21881.c:8: error: (Each undeclared identifier is reported only once
202194_0_21881.c:8: error: for each function it appears in.)
202194_0_21881.c:17: error: syntax error before '/' token