View Compilation Error

846038_0_0_19662.c:2:15: set: No such file or directory
846038_0_0_19662.c:3:18: cstdio: No such file or directory
846038_0_0_19662.c:4: error: syntax error before "namespace"
846038_0_0_19662.c: In function `main':
846038_0_0_19662.c:9: error: `set' undeclared (first use in this function)
846038_0_0_19662.c:9: error: (Each undeclared identifier is reported only once
846038_0_0_19662.c:9: error: for each function it appears in.)
846038_0_0_19662.c:9: error: syntax error before "int"
846038_0_0_19662.c:10: error: syntax error before "int"
846038_0_0_19662.c:17: error: `s' undeclared (first use in this function)
846038_0_0_19662.c:24: error: `it' undeclared (first use in this function)