/in/foo.cc: In function 'int main()':
/in/foo.cc:14:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if(a[i]-'0'+b[i]-'0'>9)
     ^~
/in/foo.cc:16:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  printf("%d",(a[i]-'0'+b[i]-'0')%10);
  ^~~~~~