View Compilation Error

0_0_11663486_25734.cpp: In function `int main()':
0_0_11663486_25734.cpp:15: error: `ios' has not been declared
0_0_11663486_25734.cpp:15: error: `sync_with_stdio' undeclared (first use this function)
0_0_11663486_25734.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)