C语言指针变量作为函数参数

1. swap(int *p1,int *p2){
2. int temp;
3. temp=*p1;
4. *p1=*p2;
5. *p2=temp;
6. }
7. main(){
8. int a,b;
9. int *pointer_1,*pointer_2;
10. scanf("%d,%d",&a,&b);
11. pointer_1=&a;pointer_2=&b;
12. if(a<b) swap(pointer_1,pointer_2);
13. printf("\n%d,%d\n",a,b);
14. }

swap(int *p1,int *p2){
    int temp;
    temp=*p1;
    *p1=*p2;
    *p2=temp;
}
main(){
    int a,b;
    int *pointer_1,*pointer_2;
    scanf("%d,%d",&a,&b);
    pointer_1=&a;pointer_2=&b;
    if(a<b) swap(pointer_1,pointer_2);
    printf("\n%d,%d\n",a,b);
}

复制纯文本新窗口

1. swap(int *p1,int *p2){
2. int *temp;
3. *temp=*p1; /*此语句有问题*/
4. *p1=*p2;
5. *p2=temp;
6. }

swap(int *p1,int *p2){
    int *temp;
    *temp=*p1;      /*此语句有问题*/
    *p1=*p2;
    *p2=temp;
}

复制纯文本新窗口

1. swap(int x,int y){
2. int temp;
3. temp=x;
4. x=y;
5. y=temp;
6. }

swap(int x,int y){
    int temp;
    temp=x;
    x=y;
    y=temp;
}

复制纯文本新窗口

1. swap(int *p1,int *p2){
2. int *p;
3. p=p1;
4. p1=p2;
5. p2=p;
6. }
7. main(){
8. int a,b;
9. int *pointer_1,*pointer_2;
10. scanf("%d,%d",&a,&b);
11. pointer_1=&a;pointer_2=&b;
12. if(a<b) swap(pointer_1,pointer_2);
13. printf("\n%d,%d\n",*pointer_1,*pointer_2);
14. }

swap(int *p1,int *p2){
    int *p;
    p=p1;
    p1=p2;
    p2=p;
}
main(){
    int a,b;
    int *pointer_1,*pointer_2;
    scanf("%d,%d",&a,&b);
    pointer_1=&a;pointer_2=&b;
    if(a<b) swap(pointer_1,pointer_2);
    printf("\n%d,%d\n",*pointer_1,*pointer_2);
}

复制纯文本新窗口

1. swap(int *pt1,int *pt2){
2. int temp;
3. temp=*pt1;
4. *pt1=*pt2;
5. *pt2=temp;
6. }
7. exchange(int *q1,int *q2,int *q3){
8. if(*q1<*q2)swap(q1,q2);
9. if(*q1<*q3)swap(q1,q3);
10. if(*q2<*q3)swap(q2,q3);
11. }
12. main(){
13. int a,b,c,*p1,*p2,*p3;
14. scanf("%d,%d,%d",&a,&b,&c);
15. p1=&a;p2=&b; p3=&c;
16. exchange(p1,p2,p3);
17. printf("\n%d,%d,%d \n",a,b,c);
18. }