Main.cc: In function 'int main()': Main.cc:5:31: error: invalid operands of types 'int*' and 'int' to binary 'operator&' scanf("%1d%1d%1d%1d%1d%1d",&a&b&c&d&e&f) ^ Main.cc:10:1: error: 'else' without a previous 'if' else{ ^