View Compilation Error

0_0_6038026_8339.c:1:20: iostream: No such file or directory
0_0_6038026_8339.c:2:17: stack: No such file or directory
0_0_6038026_8339.c:3: error: syntax error before "namespace"
0_0_6038026_8339.c: In function `main':
0_0_6038026_8339.c:11: error: `EOF' undeclared (first use in this function)
0_0_6038026_8339.c:11: error: (Each undeclared identifier is reported only once
0_0_6038026_8339.c:11: error: for each function it appears in.)
0_0_6038026_8339.c:13: error: `stack' undeclared (first use in this function)
0_0_6038026_8339.c:13: error: syntax error before "char"
0_0_6038026_8339.c:17: error: `s1' undeclared (first use in this function)