[wdliming]

Complete the sorting of three numbers from small to big:

#include <stdio.h>
#include <stdlib.h>
void Exchg(int *px, int *py)
{
    int tmp;
    tmp = *px;
    *px = *py;
    *py = tmp;    
}
int main(int argc, char *argv[])
{
    int x,y,z,t;
    while(scanf("%d%d%d",&x,&y,&z))
    {
        if(x > y)
            Exchg(&x,&y);      /*change x,y*/
        if(x > z)
            Exchg(&x,&z);      /*change x,z*/
        if(y > z)
            Exchg(&y,&z);      /*change z,y*/
        printf("small to big: %d %d %d\n",x,y,z);
    }    
    system("PAUSE"); 
    return 0;
}

compile successfully in dev c++

[ihatec]

You don't use variable t, while looks like an infinite loop, swapping is ok. If you want to sort a few numbers, you may use array or some ohter data structure and use some sorting algorithm.

Quote:

Originally Posted by wdliming

Complete the sorting of three numbers from small to big:

#include <stdio.h>
#include <stdlib.h>
void Exchg(int *px, int *py)
{
    int tmp;
    tmp = *px;
    *px = *py;
    *py = tmp;    
}
int main(int argc, char *argv[])
{
    int x,y,z,t;
    while(scanf("%d%d%d",&x,&y,&z))
    {
        if(x > y)
            Exchg(&x,&y);      /*change x,y*/
        if(x > z)
            Exchg(&x,&z);      /*change x,z*/
        if(y > z)
            Exchg(&y,&z);      /*change z,y*/
        printf("small to big: %d %d %d\n",x,y,z);
    }    
    system("PAUSE"); 
    return 0;
}

compile successfully in dev c++

[wdliming]

Thank you for your advices !!I get it!