View Compilation Error

0_0_32056911_8056.cpp: In function 'int main()':
0_0_32056911_8056.cpp:6:13: error: wrong type argument to bit-complement
     while (~scanf"%d%d%d%d", &a, &b, &c, &d)) {
             ^
0_0_32056911_8056.cpp:6:18: error: expected ')' before string constant
     while (~scanf"%d%d%d%d", &a, &b, &c, &d)) {
                  ^
0_0_32056911_8056.cpp:6:44: error: expected ';' before ')' token
     while (~scanf"%d%d%d%d", &a, &b, &c, &d)) {
                                            ^