foo.cc: In function 'int main()':
foo.cc:28:54: error: expected ')' before '{' token
         if(((a>=11)&&(a>=d+2)) || ((d>=11)&&(d>=a+2)){
                                                      ^
foo.cc:32:5: error: expected primary-expression before '}' token
     }
     ^
foo.cc:44:54: error: expected ')' before '{' token
         if(((a>=21)&&(a>=d+2)) || ((d>=21)&&(d>=a+2)){
                                                      ^
foo.cc:48:5: error: expected primary-expression before '}' token
     }
     ^
foo.cc:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%c",&x);
     ~~~~~^~~~~~~~~
foo.cc:16:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%c",&x);
         ~~~~~^~~~~~~~~

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