#include <stdio.h>
void main ()
{
    int c, n, l, sl, a;
    c=1;
    n=0;
    l=0;
    sl=0;
    while (c<=10)
    {
        printf ("enter ten numbers");
        scanf ("%d", &n);
        c++;
        
        if (n>sl){
            sl=n;
        if (sl>l)
        {a=sl;sl=l;l=a;}}}                                                                                                                                                                                                  
    printf ("the larger is %d\n", sl);
    printf ("the largest is %d\n",l);
}
这个可以了

恩，要是对负数也正常就更好了