View Compilation Error

0_0_5142505_27074.c:1:19: iostream: No such file or directory
0_0_5142505_27074.c:2:17: cstdio: No such file or directory
0_0_5142505_27074.c:3: error: syntax error before "namespace"
0_0_5142505_27074.c:4: error: syntax error before "f"
0_0_5142505_27074.c: In function `catalan':
0_0_5142505_27074.c:11: error: incompatible types in assignment
0_0_5142505_27074.c:14: error: incompatible types in assignment
0_0_5142505_27074.c: In function `main':
0_0_5142505_27074.c:23: error: `cin' undeclared (first use in this function)
0_0_5142505_27074.c:23: error: (Each undeclared identifier is reported only once
0_0_5142505_27074.c:23: error: for each function it appears in.)
0_0_5142505_27074.c:24: error: `cout' undeclared (first use in this function)
0_0_5142505_27074.c:24: error: `endl' undeclared (first use in this function)