View Compilation Error

0_0_13807215_8034.cpp: In function 'void deal(char*)':
0_0_13807215_8034.cpp:15:20: error: 'strlen' was not declared in this scope
  int i,len=strlen(a);
                    ^
0_0_13807215_8034.cpp: In function 'int calculate(char*)':
0_0_13807215_8034.cpp:28:18: error: 'strlen' was not declared in this scope
  int len=strlen(a);
                  ^
0_0_13807215_8034.cpp: In function 'void storeMap()':
0_0_13807215_8034.cpp:44:30: error: 'memset' was not declared in this scope
  memset(map,false,sizeof(map));
                              ^
0_0_13807215_8034.cpp: In function 'int maxMatch()':
0_0_13807215_8034.cpp:100:31: error: 'memset' was not declared in this scope
  memset(link,0xff,sizeof(link));
                               ^