Main.cc: In function 'int main()':
Main.cc:4:11: error: expected initializer before 'b'
int a b s;
^
Main.cc:5:10: error: 'a' was not declared in this scope
cin>>a>>b;
^
Main.cc:5:13: error: 'b' was not declared in this scope
cin>>a>>b;
^
Main.cc:7:3: error: 's' was not declared in this scope
s=a%b;
^