编译成功,但是程序出现了意外的错误!
M~S~Q 2009-04-12 09:17:40 #include <iostream>
using namespace std;
#define MAX_SIZE 200
int compare(int i, int j)
{
if(i > j)
return 1;
if(i = j)
return 0;
else
return -1;
}
int binsearch(int list[], int searchnum, int left, int right)
{
int mid;
while (left <= right)
{
mid = (left + right)/2;
switch (compare (list[mid], searchnum))
{
case -1:
left = mid + 1;
break;
case 0:
return mid;
case 1:
right = mid - 1;
}
}
return -1;
}
void main()
{
int m, n, x, right;
int list[MAX_SIZE];
P:
cout << "1.输入一个数组" << endl;
cout << "2.查找一个数字" << endl;
cout << "选择功能:";
cin >> n;
switch(n)
{
case 1:
{
cout << "请输入数组,以‘E’结束" << endl;
for(int i=0;i<=MAX_SIZE;i++)
{
cin >> list[i];
if (list[i] == 'E')
goto P;
}
}
case 2:
{
cout << "输入要查找的数字:";
cin >> x;
}
}
right = ((sizeof list/sizeof list[0]) - 1);
m = binsearch(list,x,0,right);
if (m = -1)
cout << "没有找到指定数字" << endl;
else
cout << "找到指定数字:" << x << ",位于数组中第" << m+1
<< "个数!" << endl;
}
运行结果有误,当输入E过后,直接程序就是“请输入要查找的数字:”“没有找到指定的数字”,就结束了,这是什么原因呢?