/in/foo.cc: In function 'int main()':
/in/foo.cc:28:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(mul[i]<min)min=mul[i];mid=i;
    ^~
/in/foo.cc:28:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    if(mul[i]<min)min=mul[i];mid=i;
                             ^~~
/in/foo.cc:32:17: warning: operation on 'i' may be undefined [-Wsequence-point]
    card[i]=card[++i];
                 ^~~
/in/foo.cc:36:26: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
  fprintf(stdout,"%d",sum);
                          ^