View Compilation Error

0_0_31424326_27030.cpp: In function 'int main()':
0_0_31424326_27030.cpp:5:41: error: 'malloc' was not declared in this scope
 if(__VERSION__[0]=='6')for(;;)malloc(100);
                                         ^
0_0_31424326_27030.cpp:6:34: error: 'puts' was not declared in this scope
 if(__VERSION__[0]=='7')puts("123");
                                  ^