View Compilation Error

0_0_16671710_28544.cpp: In function 'void getInput()':
0_0_16671710_28544.cpp:12:25: error: 'strcmp' was not declared in this scope
   if (strcmp(str, "<br>") == 0)
                         ^
0_0_16671710_28544.cpp:27:24: error: 'strlen' was not declared in this scope
    int len = strlen(str);
                        ^