View Compilation Error

0_0_38658887_16461.cpp: In function 'int main()':
0_0_38658887_16461.cpp:5:8: error: wrong type argument to bit-complement
 while(~scanf{"%d%d",&a,&b})
        ^~~~~
0_0_38658887_16461.cpp:5:13: error: expected ')' before '{' token
 while(~scanf{"%d%d",&a,&b})
      ~      ^
             )
0_0_38658887_16461.cpp:5:26: error: expected ';' before '}' token
 while(~scanf{"%d%d",&a,&b})
                          ^
                          ;
0_0_38658887_16461.cpp:5:27: error: expected primary-expression before ')' token
 while(~scanf{"%d%d",&a,&b})
                           ^