呵呵

#include <stdio.h>
int max (int a[],int n);
int sum (int a[],int n);

 main () {

        int a[10]={2,3,1,43,56,6,78,98,7,10};
      
        printf("max=%d\nsum=%d\n",max(a,10),sum(a,10));

      

}
int max (int a[],int n) {
        int max=a[0],i;
        for(i=0;i<n;i++)
                if(a[i]>max) max=a[i];
        return max;
}
int sum (int a[],int n) {
        int sum=0,i;
        for(i=0;i<n;i++)
                sum+=a[i];
        return sum;
}