小编Ign*_*art的帖子

我是一名编程学生,我不明白这段代码有什么问题:

    #include <stdio.h>
    #include <stdlib.h>

    void merge(int a[], int low, int high, int mid){
        int i, j, k, c[50];
        i=low;
        j=mid+1;
        k=low;
        while((i<=mid)&&(j<=high)){
            if(a[i]<a[j]){
                c[k]=a[i];
                k++;
                i++;
            } //end if
        else{
            c[k]=a[j];
            k++;
            j++;
            } //end else
        } //end while
        while(i<=mid){
            c[k]=a[i];
            k++;
            i++;
        } //end while
        while(j<=high){
            c[k]=a[j];
            k++;
            j++;
        } //end while
        for(i=low;i<k;i++){
            a[i]=c[i];
        } //end for
    } //end merge()

    int mergesort(int a[], int low, int high){
        int mid;
        if(low<high){
            mid=(low+high)/2;
            mergesort(a,low,mid);
            mergesort(a,mid+1,high);
            merge(a,low,high,mid);
        } //end if
        return(0); …