Run id: 142640

Main.cc: In function 'int main()':
Main.cc:10:25: error: expected ')' before '{' token
     while(scanf("%d",&n){
                         ^
Main.cc:13:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a);
                       ^