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2009-07-26 15:50
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int a=3,b=4;
void exchange(int x,int y)
...{
int temp;
temp=a;a=b;b=temp; //ÊÔͼ½»»»a,b
}
exchange(a,b);
cout<<a<<" "<<b<<endl;
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void exchange(int *x,int *y)
{
int temp;
temp=*x;*x=*y;*y=temp;
}
exchange(&a,&b);
cout<<a<<" "<<b<<endl;
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#include<iostream>
using namespace std;
void test_point(int *p)
...{
int a=3;
p=&a; // ²»Í¬Ö®´¦
}
int main()
...{
int x=4;
int *p1=&x;
test_point(p1);
cout<<*p1<<endl;
return 0;
}
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#include<iostream>
using namespace std;
void test_point(int *p)
...{
int a=3;
&nb
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void GetMemory(char *p, int num)
{
p = (char *)malloc(sizeof(char) * num);
}
void Test(void)
{
char *str = NULL;
GetMemory(str, 100); // str ÈÔȻΪ NULL
strcpy(str, "hello"); // ÔËÐдíÎó
}
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int n;
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int *p;
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void Swap1(int &a, int &b)
{
int temp = a;
a = b;
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