View Compilation Error

0_0_11212924_3856.c:1:19: iostream: No such file or directory
0_0_11212924_3856.c:4:20: algorithm: No such file or directory
0_0_11212924_3856.c:5: error: syntax error before "namespace"
0_0_11212924_3856.c:12: error: syntax error before "cmp"
0_0_11212924_3856.c:12: error: syntax error before "a"
0_0_11212924_3856.c: In function `cmp':
0_0_11212924_3856.c:14: error: `a' undeclared (first use in this function)
0_0_11212924_3856.c:14: error: (Each undeclared identifier is reported only once
0_0_11212924_3856.c:14: error: for each function it appears in.)
0_0_11212924_3856.c:14: error: `b' undeclared (first use in this function)
0_0_11212924_3856.c: In function `main':
0_0_11212924_3856.c:26: error: `cin' undeclared (first use in this function)
0_0_11212924_3856.c:63: error: `cout' undeclared (first use in this function)
0_0_11212924_3856.c:63: error: `endl' undeclared (first use in this function)