A.practice
B.person
C.reason
D.problem
第1题:
A.is
B. was
C.be
D. been
第2题:
He is talking so much about America as if he ____ there.
A、had been
B、has been
C、was
D、been
第3题:
已知在文件IN. dat中存有100个产品销售记录,每个产品销售记录由产品代码code(字符型4位)、产品名称name(字符型10位)、单价uprice(整型)、数量amount(整型)、金额sum(长整型)5部分组成。其中:金额=单价×数量。函数Rdata()是读取这100个销售记录并存入结构数组sell中。请编写函数SortDat(),其功能要求:按金额从小到大进行排列,若金额相等,则按产品代码从小到大进行排列,最终排列结果仍存入结构数组sell中。最后调用函数Wdata(),把结果输出到OUT. dat文件中。
注意:部分源程序已经给出。请勿改动主函数main()、读数据函数Rdata()和输出数据函数Wdata()的内容。
include <stdio. h>
include <string. h>
include <conio. h>
include <stdlib. h>
define MAX 100
typedef struct
{ char code[5]; /* 产品代码 */
char name[11]; /* 产品名称 */
int uprice; /* 单价 */
int amount; /* 数量 */
long sum; /* 金额 */
} PRO;
PRO sell [MAX];
void Rdata();
void Wdata();
void SortDat()
{
}
void main ()
{ memset(sell, 0, sizeof(sell)
Rdata();
SortDat();
Wdata();
}
void Rdata()
{ FILE *fp;
char str[80], ch[11];
int i;
fp = fopen("IN. dat", "r");
for (i=0; i<100; i++)
{ fgets(str, 80, fp);
memcpy(sell[i].code, str, 4);
memcpy(sell[i].name, str+4, 10);
memcpy(ch, str+14, 4);
ch[4] = 0;
sell[i].uprice = atoi(ch);
memcpy(ch, str+18, 5);
ch[5] = 0;
sell[i]. amount = atoi(ch);
sell[i].sum = (long)sell[i]. uprice * sell[i]. amount;
}
fclose(fp);
}
void Wdata()
{ FILE *fp;
int i;
fp = fopen("OUT. dat", "w");
for (i=0; i<100; i++)
{ printf("%s %s %4d %5d %5d\n", sell[i]. code, sell[i].name,
sell[i].uprice, sell[i]. amount, sell[i]. sum);
fprintf(fp, "%s %s %4d %5d %5d\n", sell[i]. code,
sell[i]. name, sell[i]. uprice, sell[i]. amount, sell[i]. sum);
}
fclose(fp);
}
第4题:
A.Has-arelationshipsshouldneverbeencapsulated.
B.Has-arelationshipsshouldbeimplementedusinginheritance.
C.Has-arelationshipscanbeimplementedusinginstancevariables.
D.Is-arelationshipscanbeimplementedusingtheextendskeyword.
E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.
F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.
G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.
第5题:
yogurt它的中文意思是:( )
A.酸奶
B.矿泉水
C.果汁
D.碳酸饮料
第6题:
5.We can______ books _______bookstore(书店).
A. sell ;to
B. buy ;from
C. sell ;from
D. buy ;to