View Compilation Error

0_0_6944895_12597.c:2:16: stack: No such file or directory
0_0_6944895_12597.c:3:19: iostream: No such file or directory
0_0_6944895_12597.c:4: error: syntax error before "namespace"
0_0_6944895_12597.c: In function `main':
0_0_6944895_12597.c:18: error: `stack' undeclared (first use in this function)
0_0_6944895_12597.c:18: error: (Each undeclared identifier is reported only once
0_0_6944895_12597.c:18: error: for each function it appears in.)
0_0_6944895_12597.c:18: error: syntax error before "char"
0_0_6944895_12597.c:21: error: `my' undeclared (first use in this function)