/in/foo.cc: In function 'int main()':
/in/foo.cc:19:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if((a[A]-'0')+(b[B]-'0')>9)
     ^~
/in/foo.cc:21:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  c[C]=((a[A]-'0')+(b[B]-'0'))%10;
  ^