View Compilation Error

1038281_0_0_7612.c:1:21: iostream: No such file or directory
1038281_0_0_7612.c:2: error: syntax error before "namespace"
1038281_0_0_7612.c: In function `main':
1038281_0_0_7612.c:4: error: `__int64' undeclared (first use in this function)
1038281_0_0_7612.c:4: error: (Each undeclared identifier is reported only once
1038281_0_0_7612.c:4: error: for each function it appears in.)
1038281_0_0_7612.c:4: error: syntax error before "a"
1038281_0_0_7612.c:7: error: `a' undeclared (first use in this function)
1038281_0_0_7612.c:11: error: `cin' undeclared (first use in this function)