View Compilation Error

0_0_27123159_24926.cpp: In function 'int main()':
0_0_27123159_24926.cpp:4:12: error: expected ')' before '~' token
 while(scanf~("%c%c%c",&a,&b,&c))
            ^
0_0_27123159_24926.cpp:4:31: error: wrong type argument to bit-complement
 while(scanf~("%c%c%c",&a,&b,&c))
                               ^