请用C语言编一个程序计算3位学生3门课成绩总分和平均成绩?

2025-03-21 11:45:39
推荐回答(5个)
回答1:

#include
#define N 50
struct student
{
int num;
char name[20];
int score[3];
double avr;
}str[N];
int count=0;

struct student input();
void display();
void sort();
void insert();
void del();

void main()
{
int select;
printf("\n\t\t欢迎光临学员成绩管理系统");
do
{
printf("\n 0、退出\n 1、录入学员信息\n 2、插入学员信息\n 3、删除学员信息\n");
printf("请选择功能: ");
scanf("%d",&select);
if(select==0)
break;
switch(select)
{
case 1: input();
sort();
display();
break;
case 2:
printf("\n插入前的学员信息: ");
display();
insert();
printf("\n插入后的学员信息: ");
display();
break;
case 3:
printf("\n删除前的学员信息: ");
display();
del();
printf("\n删除后的学员信息: ");
display();
break;
default:
printf("\n输入有误,请在0-3之间选择。\n\n");
}
}while(0);

}

//录入学员信息函数
struct student input()
{
char ch='y';
struct student stud; int sum=0,j;

while((ch=='y')||(ch=='Y'))
{
sum=0; //改这里
printf("\n学号:");
scanf("%d",&str[count].num);
printf("\n姓名:");
scanf("%s",str[count].name);
printf("\n三门成绩:\n");
for(j=0;j<3;j++)
{
printf("成绩%d: ",j+1);
scanf("%d",&str[count].score[j]);
sum+=str[count].score[j];
}
str[count].avr=sum/3;
printf("\n是否继续?(y or n)");
fflush(stdin);
scanf("%c",&ch);
count++;
}
return stud;
}

//成绩排序函数
void sort()
{
struct student temp;
int i,j;
for (i=0;i{
for(j=0;j{
if(str[j].avr>str[j+1].avr)
{
temp=str[i];
str[i]=str[j];
str[j]=temp;
}
}
}

}

//显示学员信息函数
void display()
{
int i;
printf("\n学号\t姓名\t平均成绩\n");
for(i=0;i{
printf("%d",str[i].num);
printf("\t%s",str[i].name);
printf("\t%6.2f\n",str[i].avr);
}
}

//插入学员信息函数
void insert()
{
int i,j;
struct student temp;
char ch;
printf("是否要插入新学员(y or n)");
fflush(stdin);
scanf("%c",&ch);
if(ch=='y'||ch=='Y')
{
printf("\n请输入要插入的学员信息");
temp=input();
for(i=0;i{
if(str[i].avr>temp.avr)
break;
}
for(j=count;j>=i;j--)
{
str[j+1]=str[j];
}
str[i]=temp;
}
count++;
}

//删除学员信息函数
void del()
{
int dnum;
int i,j;
char ch;
printf("是否要删除学员信息(y or n)");
fflush(stdin);
scanf("%c",&ch);
if(ch=='y'||ch=='Y')
{
printf("\n请输入要删除的学员:");
scanf("%d",&dnum);
for(i=0;i{
if(str[i].num==dnum)
break;
}
for(j=i;j{
str[j]=str[j+1];
}
}
}

回答2:

#include
void main()
{
int score[9]; //学生分数
int total[3]; //总分
int average[3]; //平均分
int i; //循环变量
for(i=0;i<9;i++)
scanf("%d",score+i); //输入分数
for(i=0;i<3;i++){
total[i]=score[i*3]+score[i*3+1]+score[i*3+2]; //计算总分
average[i]=total[i]/3; //计算平均分
printf("学生%d的总分:%d 平均分:%d\n",i,total[i],average[i]); //打印成绩
}
}

回答3:

你的问题我们有分歧.所以我来个算所以科目的总成,算出所有科目的平均成绩.你根据需要选择吧.呵呵

#include
void main()
{
int i,j;//循环变量
int total=0;//总成绩初始
float average=0.0;//平均成绩初始
int score[3][3];//2维数组,用于存放成绩,即3人的3门成绩
printf("输入3个学生的3门成绩:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&score[i][j]);//输入3人3门的成绩,总共9门成绩
total+=score[i][j];//算出总成绩
}
}
average=total/9;//总成绩除以9门成绩
printf("总成绩:%d 平均成绩:%f",total,average);
}

回答4:

C语言实现如下:

#include 
void main()
{
float a[3][3],sum[3];
int i;
for(i=0;i<3;i++)
{
printf("请输入第%d位同学的三科成绩:",i+1);
scanf("%f%f%f",&a[i][0],&a[i][1],&a[i][2]);
//输入该同学的三科成绩。
sum[i]=a[i][0]+a[i][1]+a[i][2];
printf("该同学三科成绩的总分为%0.2f,平均成绩为%0.2f。\n",sum[i],sum[i]/3);
//保留两位小数输出该同学三个成绩的总分和平均成绩。
}
}

回答5:

void main()
{
float score[3];
for(int i=0,i<3,i++)
{ cin>>score[i]; } //..........见最后*处
float total=0;
float average;
for(int i=0,i<3,i++)
{ total=total+score[i]; }
average=total/3;
cout<<"total is"< cout<<"average is"< }
*输入语句有点忘了 可能格式不对,这点你自己看下书

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