View Compilation Error

0_0_18306496_17541.cpp: In function 'int main()':
0_0_18306496_17541.cpp:17:48: error: 'memset' was not declared in this scope
             memset(table,0,1007*17*sizeof(char));
                                                ^
0_0_18306496_17541.cpp:23:48: error: 'strcmp' was not declared in this scope
                     if (strcmp(balloon,table[j]) == 0){
                                                ^
0_0_18306496_17541.cpp:31:46: error: 'strcpy' was not declared in this scope
                     strcpy(table[len],balloon);
                                              ^