Question

C语言 编程题 在线等答案

#include<stdio.h>
#define N 1
struct thing
{
char name[20];
int ID;
int score[4];
int average;
};

main ()
{
FILE *fp;
int i,j,total;
struct thing student[N];
fp = fopen("stud","w");
printf("Enter the information and score of every student\n");

for (j=0;j<N;j++)
{
scanf("%s",student[j].name);
scanf("%d",&student[j].ID);
total=0;
for (i=0;i<4;i++)
{

scanf("%d",&student[j].score[i]);
total+=student[j].score[i];

}
student[j].average = total/4;
}

for (j=0;j<N;j++)
{
fprintf(fp,"%s %d",student[j].name,student[j].ID);
for (i=0;i<4;i++)
fprintf(fp,"%d",student[j].score[i]);

fprintf(fp,"%-5d\n",student[j].average);
}

fclose(fp);
fp = fopen("stud","r");
printf("姓名 学号 数学 外语 体育 C语言 平均\n");
for (j=0;j<N;j++)
{
fscanf(fp,"%s %d %d %d %d %d %d",student[j].name,&student[j].ID,&student[j].score[0],&student[j].score[1],&student[j].score[2],&student[j].score[3],&student[j].average);
fprintf(stdout,"%s %d %d %d %d %d %d\n",student[j].name,student[j].ID,student[j].score[0],student[j].score[1],student[j].score[2],student[j].score[3],student[j].average);
}

fclose(f.p);
}

Answer 1

把程序中fprintf语句中%d与引号之间加个空格。运行结果如下：

Answer 2

#include<stdio.h>
#define N 1
struct thing
{
char name[20];
int ID;
int score[4];
int average;
};

main ()
{
FILE *fp;
int i,j,total;
struct thing student[N];
fp = fopen("stud.txt","wt");
printf("Enter the information and score of every student\n");

for (j=0;j<N;j++)
{
scanf("%s",student[j].name);
scanf("%d",&student[j].ID);
total=0;
for (i=0;i<4;i++)
{

scanf("%d",&student[j].score[i]);
total+=student[j].score[i];

}
student[j].average = total/4;
}

for (j=0;j<N;j++)
{
fprintf(fp,"%s %d",student[j].name,student[j].ID);

for (i=0;i<4;i++)
fprintf(fp," %d",student[j].score[i]);

fprintf(fp," %-5d\n",student[j].average);
}

fclose(fp);
fp = fopen("stud.txt","rt");
printf("姓名 学号 数学 外语 体育 C语言 平均\n");
for (j=0;j<N;j++)
{
fscanf(fp,"%s %d %d %d %d %d %d",student[j].name,&student[j].ID,&student[j].score[0],&student[j].score[1],&student[j].score[2],&student[j].score[3],&student[j].average);
fprintf(stdout,"%s %d %d %d %d %d %d\n",student[j].name,student[j].ID,student[j].score[0],student[j].score[1],student[j].score[2],student[j].score[3],student[j].average);
}

fclose(fp);
}

Answer 3

把程序中fprintf语句中%d与引号之间加个空格。运行结果如下：

Answer 4

程序哪个地方