View Compilation Error

0_0_29126609_31522.cpp: In function 'int main()':
0_0_29126609_31522.cpp:36:31: error: 'memset' was not declared in this scope
         memset(c, 0, sizeof(c));
                               ^
0_0_29126609_31522.cpp:43:33: error: 'strcmp' was not declared in this scope
             if(!strcmp(ch, "End"))
                                 ^