/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'coat' was not declared in this scope
  coat>>a>>b>>c;
  ^~~~
/in/foo.cc:6:2: note: suggested alternative: 'char'
  coat>>a>>b>>c;
  ^~~~
  char
/in/foo.cc:7:9: error: expected primary-expression before ';' token
  a=a*50%;
         ^
/in/foo.cc:8:9: error: expected primary-expression before ';' token
  b=b*20%;
         ^
/in/foo.cc:9:4: error: 'C' was not declared in this scope
  c=C*30%;
    ^
/in/foo.cc:9:9: error: expected primary-expression before ';' token
  c=C*30%;
         ^
/in/foo.cc:10:8: error: 'd' was not declared in this scope
  a+b+c=d
        ^