看c primer 有个程序
#include<stdio.h>
int main(void)
{
    unsigned width,precision;
        int number=256;
        double weight=242.5;
        printf("what field width?\n");
        scanf("%d,&width");
        printf("the number is:%*d: \n",width,number);
        printf("now enter a width and a precision: \n");
        scanf("%d %d",&width,&precision);
        printf("weight=&*.*f\n",width,precision,weight);
        return 0;
}
我在vs2010上运行的时候出现了第一排“what field width?”但是我随便输入一个数字，然后vs2010就崩溃了，哪位好心人能帮下

谢了  你还能跟我讲下原理吗  书上的讲的不详细  每一步是什么意思

int main(void)
{
    unsigned width,precision;
        int number=256;
        double weight=242.5;
        printf("what field width?\n");
        scanf("%d",&width);
        printf("the number is:%*d: \n",width,number);  【%*d是什么意思，通常%d这种类型的不都是取一个值吗？怎么后面有2个：一个width和number，实际运行number is：256。搞不懂
        printf("now enter a width and a precision: \n");
        scanf("%d %d",&width,&precision);
        printf("weight=%*.*f\n",width,precision,weight);【首先%*.*f就不懂，然后后面跟3个可以调用的值也完全搞不懂】
        return 0;
}
我昨天才学的C语言，没点基础，不好意思了。