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