请问该fun 函数中哪里错了，大神指点迷津

Question

#include
void fun(int m, int k, int xx[])
{
int j,n=0,a,b=0;
while(n<k)
{
a=m+1;
for(j=1;j<a;j++)
{
if(a%j==0)
b++;
}
if(b==0)
xx[n++]=a;
}
xx[n]=0;
}
main()
{
int m, n, zz[1000] ;void NONO ();
printf("\nPlease enter two integers:");
scanf("%d %d", &m, &n);
fun(m, n, zz);
for(m = 0 ; m < n ; m++)
printf("%d ", zz[m]);
printf("\n");
NONO();
}
void NONO ()
{/* 本函数用于打开文件，输入测试数据，调用fun函数，输出数据，关闭文件。*/
int m, n, zz[1000], i ;
FILE *rf, *wf ;
rf = fopen("in.dat","r");
wf = fopen("out.dat","w");
for(i = 0 ; i < 10 ; i++) {
fscanf(rf, "%d %d", &m, &n);
fun(m, n, zz);
for(m = 0 ; m < n ; m++) fprintf(wf, "%d ", zz[m]);
fprintf(wf, "\n");
}
fclose(rf);
fclose(wf);
}

Answer 1

有以下几点不对：
1.fun()函数不对，有死循环，每次a都等于m+1,
//你的逻辑
void fun(int m, int k, int xx[])
{
int j,n=0,a,b=0;//这里一大堆错,b不能放在循环外面,否则b永远不可能为0,a每次要++

while(n<k)
{
    a=m+1;
    for(j=1;j<a;j++)
    {
        if(a%j==0)
            b++;
    }
    if(b==0)
        xx[n++]=a;
}
xx[n]=0;

}

//该进之后
void fun(int m, int k, int xx[])
{
if (NULL == xx || m <= 0 || k <= 0)
{
return;
}

int a = m + 1;
int n = 0;
if (1 == m)
{
    xx[n++] = 2;
    a++;
}

while(n < k)
{
    int j;
    int b = 0;
    for(j = 2;j < a;j++)//从2开始
    {
        if((a%j) == 0)
        {
            b++;//一次不满足直接退出;
            break;
        }
    }
    if(b == 0)
    {
        xx[n++]=a;
    }
    a++;
}
xx[n]=0;

}

//我的版本
void fun(int m, int k, int xx[])
{
if (NULL == xx || m <= 0 || k <= 0)
{
return;
}

int iCount = 1;
while (k > 0)
{
    int iTemp = m + iCount;
    if (2 == iTemp)
    {
        *xx++ = iTemp;
        k--;
    }
    else if (1 == (iTemp & 1))
    {
        iTemp = (iTemp + 1) / 2;
        while (iTemp >= 2)
        {
            if (0 == ((m + iCount)%iTemp))
            {
                break;
            }
            iTemp--;
        }
        if (1 == iTemp)
        {
            *xx++ = m + iCount;
            k--;
        }
    }
    iCount++;
}
*xx = 0;

}

2.文件流操作不对,这个不多说，不是重点