View Compilation Error

0_0_5174155_21639.c:1:19: iostream: No such file or directory
0_0_5174155_21639.c:2: error: syntax error before "namespace"
0_0_5174155_21639.c: In function `main':
0_0_5174155_21639.c:6: error: `__int64' undeclared (first use in this function)
0_0_5174155_21639.c:6: error: (Each undeclared identifier is reported only once
0_0_5174155_21639.c:6: error: for each function it appears in.)
0_0_5174155_21639.c:6: error: syntax error before "A"
0_0_5174155_21639.c:7: error: `A' undeclared (first use in this function)
0_0_5174155_21639.c:10: error: `cin' undeclared (first use in this function)