一道c语言的基础题望大家看看

Question

感觉自己是个憨憨，望各位帮忙看看，蟹蟹各位潜水专家拉拉啊拉啊啊拉

Answer 1

scanf("%d",x)改成scanf("%d",&x)
还有其他错误，代码修改如下：

#include <stdio.h>
int main()
{
    double sum = 0,data,n;
    int x,i;
    printf("the number of students:");
    scanf("%d",&x); 
    printf("the scores:");
    if (x>0)
    {
        for(i=0;i<x;i++)
        {
            scanf("%lf",&data);
            sum += data;
            n++;
        }
        n = sum /x;
        printf("average=%.2lf",n);
    }else
        printf("average=0");
    return 0;
}