View Compilation Error

0_0_18712039_1831.cpp: In function 'int main()':
0_0_18712039_1831.cpp:109:37: error: 'memset' was not declared in this scope
         memset(inT1, 0, sizeof(inT1));
                                     ^
0_0_18712039_1831.cpp:115:33: error: 'strlen' was not declared in this scope
             int len = strlen(str);
                                 ^