>>571
pr2
#include <stdio.h>
int main(){
(省略)
struct syouhin_data shohin1 = {"シャープペンシル", 500, 3, 0} ,*shouhin1_p;

shouhin1_p=&syouhin1;
shohin1_p->kingaku = shohin_p->tanka * shohin1_p->kosuu;

printf("商品名：%s\n", shohin1_p->name);
printf("単価：%d\n", shohin1_p->tanka);
printf("個数：%d\n", shohin1_p->kosuu);
printf("金額：%d\n", shohin1_p->kingaku);
return 0;
}