foo.cc: In function ‘int main()’:
foo.cc:19:33: warning: unnecessary parentheses in declaration of ‘i’ [-Wparentheses]
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:9: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |         ^~~
foo.cc:19:33: note: remove parentheses
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:9: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |         ^~~
foo.cc:19:33: warning: unnecessary parentheses in declaration of ‘j’ [-Wparentheses]
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:25: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                         ^~~
foo.cc:19:33: note: remove parentheses
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:25: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                         ^~~
foo.cc:19:33: warning: unnecessary parentheses in declaration of ‘p’ [-Wparentheses]
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:41: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                                         ^~~
foo.cc:19:33: note: remove parentheses
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:41: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                                         ^~~
foo.cc:19:33: warning: unnecessary parentheses in declaration of ‘q’ [-Wparentheses]
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:57: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                                                         ^~~
foo.cc:19:33: note: remove parentheses
   19 | #define For(i,x)        for(int (i)=0;(i)<=(x);(i)++)
      |                                 ^~~
foo.cc:28:57: note: in expansion of macro ‘For’
   28 |         For(i,10)       For(j,10)       For(p,10)       For(q,10)
      |                                                         ^~~