View Compilation Error

0_0_37443537_10827.cpp: In function 'int maxmatch()':
0_0_37443537_10827.cpp:29:33: error: 'memset' was not declared in this scope
     memset(match,0,sizeof(match));
                                 ^
0_0_37443537_10827.cpp: In function 'bool init()':
0_0_37443537_10827.cpp:40:29: error: 'memset' was not declared in this scope
     memset(map,0,sizeof(map));
                             ^