View Compilation Error

0_0_12374964_31935.cpp:6: error: ISO C++ forbids declaration of `slove2' with no type
0_0_12374964_31935.cpp: In function `int slove2()':
0_0_12374964_31935.cpp:7: error: `memset' undeclared (first use this function)
0_0_12374964_31935.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)