sum = $1 ,  rmul = $2 , k = $3     
     int mul();
     int k = 5;
     void main(){
           int i, rmul, sum = 0;
           for( i = 0 ; i < 5 ; i++ ) {
                int k = 10; sum += 2; rmul = mul(); k++;
           }
           printf("sum =%d, mul =%d, k =%d\n",sum,rmul, k);
     }
     int mul() {
           static int mul = 1;
           mul += mul; return(mul);
     }
 
參考書籍:旗標無痛學習教本