Question

VC6，C语言，一段小程序，请帮忙改个语法

#include<stdio.h>
typedef struct student
{
int num;
char name[20];
float score[3];
}student;
student stu[4];
void main()
{
float average[4],max;
int i;int k=0;int j=0;
printf("Please input the information:\n");
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[1].num,&stu[1].name,&stu[1].score[0],&stu[1].score[1],&stu[1].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[2].num,&stu[2].name,&stu[2].score[0],&stu[2].score[1],&stu[2].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
for(i=0;i<4;i++)
printf("the score average of the student %d is:%f"stu[i].num,average[i]);
for(i=0;i<4;i++)
{
max=average[k];
j++;
if(max<average[j])
{
max=average[j];
k=j;
}
}
printf("the information of the best student is:\n %d %c %f %f %f %f",stu[j].num,stu[j].name,stu[j].score[0],stu[j].score[1],stu[j].score[2],average[j]);
}

--------------------Configuration: 链表练习 - Win32 Debug--------------------
Compiling...
01.cpp
D:\VC6.0++\MSDev98\MyProjects\链表练习\01.cpp(21) : error C2146: syntax error : missing ')' before identifier 'stu'
D:\VC6.0++\MSDev98\MyProjects\链表练习\01.cpp(21) : error C2059: syntax error : ')'
执行 cl.exe 时出错.

01.obj - 1 error(s), 0 warning(s)

Answer 1

#include<stdio.h>
typedef struct student
{
int num;
char name[20];
float score[3];
}student;
student stu[4];
void main()
{
float average[4],max;
int i;int k=0;int j=0;
printf("Please input the information:\n");
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[1].num,&stu[1].name,&stu[1].score[0],&stu[1].score[1],&stu[1].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[2].num,&stu[2].name,&stu[2].score[0],&stu[2].score[1],&stu[2].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
for(i=0;i<4;i++)
printf("the score average of the student %d is:%f",stu[i].num,average[i]); //逗号 双一号后面少了个逗号
for(i=0;i<4;i++)
{
max=average[k];
j++;
if(max<average[j])
{
max=average[j];
k=j;
}
}
printf("the information of the best student is:\n %d %c %f %f %f %f",stu[j].num,stu[j].name,stu[j].score[0],stu[j].score[1],stu[j].score[2],average[j]);
}

追问

我想问为什么算平均分average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
结果都是没算对的？例如是95 94 92得到的结果却是62.000000？要怎么改数值类型？

追答

你的错误还很多

scanf 的输入格式你完全不会啊？

而且 name是char数组 你输入时却设置接收一个char

还有scanf格式里的那么多的双引号

而且scanf格式里的\n你是无法输入的

scanf("%d %s %f %f %f ",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);

记录最大平均分也不对

下面是我把错误全改过的

Please input the information:
111 aaa 76 88 65
222 bbb 98 78 54
333 ccc 76 89 55
444 ddd 87 99 66
the score average of the student 111 is:51.000000
the score average of the student 222 is:44.000000
the score average of the student 333 is:48.000000
the score average of the student 444 is:55.000000
the information of the best student is:
444 ddd 87.000000 99.000000 66.000000 55.000000
Press any key to continue

#include
typedef struct student
{
int num;
char name[20];
float score[3];
}student;
student stu[4];
void main()
{
float average[4],max;
int i;int k=0;int j=0;
printf("Please input the information:\n");
scanf("%d %s %f %f %f",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);
scanf("%d %s %f %f %f",&stu[1].num,&stu[1].name,&stu[1].score[0],&stu[1].score[1],&stu[1].score[2]);
scanf("%d %s %f %f %f",&stu[2].num,&stu[2].name,&stu[2].score[0],&stu[2].score[1],&stu[2].score[2]);
scanf("%d %s %f %f %f",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
for(i=0;i<4;i++)
printf("the score average of the student %d is:%f\n",stu[i].num,average[i]); //逗号 双一号后面少了个逗号
for(i=0;i<4;i++)
{
if(i==0 ||max<average[i])
{
max=average[i];
j=i;
}
}
printf("the information of the best student is:\n %d %s %f %f %f %f\n",stu[j].num,stu[j].name,stu[j].score[0],stu[j].score[1],stu[j].score[2],average[j]);
}

追问

我想问为什么算平均分average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
结果都是没算对的？例如是95 94 92得到的结果却是62.000000？要怎么改数值类型？

追答

你赋值的是 score 0 1 2 但是你算平均分是 是 score 1 2 3 你觉得能对么

这下就全对了

Please input the information:
111 aaa 33 44 55
222 bbb 44 55 66
333 ccc 66 77 88
444 ddd 77 88 99
the score average of the student 111 is:44.000000
the score average of the student 222 is:55.000000
the score average of the student 333 is:77.000000
the score average of the student 444 is:88.000000
the information of the best student is:
444 ddd 77.000000 88.000000 99.000000 88.000000
Press any key to continue

#include
typedef struct student
{
int num;
char name[20];
float score[3];
}student;
student stu[4];
void main()
{
float average[4],max;
int i;int k=0;int j=0;
printf("Please input the information:\n");
scanf("%d %s %f %f %f",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);
scanf("%d %s %f %f %f",&stu[1].num,&stu[1].name,&stu[1].score[0],&stu[1].score[1],&stu[1].score[2]);
scanf("%d %s %f %f %f",&stu[2].num,&stu[2].name,&stu[2].score[0],&stu[2].score[1],&stu[2].score[2]);
scanf("%d %s %f %f %f",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
average[i]=(stu[i].score[0]+stu[i].score[1]+stu[i].score[2])/3;
for(i=0;i<4;i++)
printf("the score average of the student %d is:%f\n",stu[i].num,average[i]); //逗号 双一号后面少了个逗号
for(i=0;i<4;i++)
{
if(i==0 ||max<average[i])
{
max=average[i];
j=i;
}
}
printf("the information of the best student is:\n %d %s %f %f %f %f\n",stu[j].num,stu[j].name,stu[j].score[0],stu[j].score[1],stu[j].score[2],average[j]);
}

Answer 2

// test333.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<stdio.h>

typedef struct student
{
int num;
char name[20];
float score[3];
}student;
student stu[4];

void main()
{
float average[4],max;
int i;int k=0;int j=0;
printf("Please input the information:\n");
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[0].num,&stu[0].name,&stu[0].score[0],&stu[0].score[1],&stu[0].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[1].num,&stu[1].name,&stu[1].score[0],&stu[1].score[1],&stu[1].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[2].num,&stu[2].name,&stu[2].score[0],&stu[2].score[1],&stu[2].score[2]);
scanf("%d ""%c ""%f ""%f ""%f \n",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;
for(i=0;i<4;i++)
printf("the score average of the student %d is:%f",stu[i].num,average[i]);
for(i=0;i<4;i++)
{
max=average[k];
j++;
if(max<average[j])
{
max=average[j];
k=j;
}
}
printf("the information of the best student is:\n %d %c %f %f %f %f",stu[j].num,stu[j].name,stu[j].score[0],stu[j].score[1],stu[j].score[2],average[j]);
}

Answer 3

scanf("%d %c %f %f %f \n",&stu[3].num,&stu[3].name,&stu[3].score[0],&stu[3].score[1],&stu[3].score[2]);
for(i=0;i<4;i++)
{
average[i]=(stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3;

printf("the score average of the student %d is:%f"stu[i].num,average[i]);
}
这样应该可以了