我写下了下面的程序,该程序使用quicksort算法来排序使用链接列表将多少个整数放入命令行的方式。我不仅得到关于混合声明的ISO C90错误,而且我的代码中存在内存泄漏,我不知道如何解决它。任何帮助,将不胜感激!带链接列表的快速排序
#include <stdio.h>
#include "linked_list.h"
#include <stdlib.h>
#include "memcheck.h"
#include <string.h>
#include <assert.h>
node *quicksort(node *list);
int ListLength (node *list);
int main(int argc, char *argv[]) {
if (argc == 1) {
fprintf(stderr, "usage: %s [-q] number1 number2 ... \
(must enter at least one argument)\n", argv[0]);
exit(1);
}
node *list;
node *sorted_list;
int i;
int intArg = 0; /* number of integer arguments */
int print = 1;
/* if -q is found anywhere then we are going
* to change the behavior of the program so that
* it still sorts but does not print the result */
for (i = 1 ; i < argc; i++) {
if (strcmp(argv[i], "-q") == 0) {
print = 0;
}
else {
list = create_node(atoi(argv[i]), list); /* memory allocation in the create_node function */
intArg++; }
}
if (intArg == 0) {
fprintf(stderr, "usage: %s [-q] number1 number2 ...\
(at least one of the input arguments must be an integer)\n", argv[0]);
exit(1); }
sorted_list = quicksort(list);
free_list(list);
list = sorted_list;
if (print == 1) {
print_list(list); }
print_memory_leaks();
return 0; }
/* This function sorts a linked list using the quicksort
* algorithm */
node *quicksort(node *list) {
node *less=NULL, *more=NULL, *next, *temp=NULL, *end;
node *pivot = list;
if (ListLength(list) <= 1) {
node *listCopy;
listCopy = copy_list(list);
return listCopy; }
else {
next = list->next;
list = next;
/* split into two */
temp = list;
while(temp != NULL) {
next = temp->next;
if (temp->data < pivot->data) {
temp->next = less;
less = temp;
}
else {
temp->next = more;
more = temp;
}
temp = next;
}
less = quicksort(less);
more = quicksort(more); }
/* appending the results */
if (less != NULL) {
end = less;
while (end->next != NULL) {
end = end->next;
}
pivot->next = more;
end->next = pivot;
return less; }
else {
pivot->next = more;
return pivot; } }
int ListLength (node *list) {
node *temp = list;
int i=0;
while(temp!=NULL) {
i++;
temp=temp->next; }
return i; }
什么是编译器错误信息?你怎么知道有内存泄漏? – 2012-02-24 01:07:44
它通过分配内存开始,然后打印出我以正确顺序输入的一些数字,但是停止并打印内存泄漏线:78和更高版本在第20行一堆。 – 2012-02-24 01:13:16
混合声明错误可能是在声明变量之前检查argc。如果我在gcc中使用-pedantic标志进行编译,我会得到这个结果。 – foo 2012-02-24 01:18:51