求解一道关于C语言的编程题

2024-12-20 01:51:15

推荐回答（3个）

回答1：

#include
struct student//声明结构体类型Student
{
char name[10];
int num;
int score1;
int score2;
int score3;
double pjf;
};

student makestr()//结构体赋值
{
student stup;
int i=0;
printf("please enter student messages");
printf(" \n");
stup.pjf=0.0;
printf("please enter student name");
printf(" \n");
scanf("%s",stup.name);
printf("please enter student number");
printf(" \n");
scanf("%d",&stup.num);
printf("please enter student score1");
printf(" \n");
scanf("%d",&stup.score1);
printf("please enter student score2");
printf(" \n");
scanf("%d",&stup.score2);
printf("please enter student score3");
printf(" \n");
scanf("%d",&stup.score3);
return stup;
}

double getpj(student stu)//求平均
{
double tmp=0.0;
double pj=0.0;

stu.pjf=(stu.score1+stu.score2+stu.score3)/3.0;

return stu.pjf;
}

student* getrank(student stu[5],int n)//冒泡排序
{
int i=0,j=0;
student stu1;
stu1.pjf=0.0;
for(i=0;i {
for(j=0;j {
if(stu[j].pjf > stu[j+1].pjf)
{
stu1=stu[j];
stu[j] = stu[j+1];
stu[j+1]=stu1;
}
}
}
return stu;
}

student* enter(student stu[5],student stuq[6],int n)//插入额外的学生数据
{
student stuk;
printf("please enter stuk messages");
printf(" ");
stuk.pjf=0.0;
printf("please enter student name");
printf(" \n");
scanf("%s",stuk.name);
printf("please enter student number");
printf(" \n");
scanf("%d",&stuk.num);
printf("please enter student score1");
printf(" \n");
scanf("%d",&stuk.score1);
printf("please enter student score2");
printf(" \n");
scanf("%d",&stuk.score2);
printf("please enter student score3");
printf(" \n");
scanf("%d",&stuk.score3);

stuk.pjf=getpj(stuk);
stuq[0]=stuk;

for(int i=0;i {
stuq[i+1]=stu[i];
}
return stuq;

}

int main(int argc, char* argv[])//主程序
{

int i=0,n=5;
student stu[5];
student stuq[6];
student tmp;

FILE* fp1;
FILE* fp2;
FILE* fp3;
fp1 = fopen("student.txt", "w+");//三个输出文件
fp2 = fopen("sort.txt", "w+");
fp3 = fopen("sort2.txt", "w+");

for(i=0;i {
stu[i]=makestr();
}

for(i=0;i {
stu[i].pjf= getpj(stu[i]);
}

for(i=0;i {
fprintf(fp1,"%s\t %d\t %d\t %d\t %d\t %f\n",stu[i].name,stu[i].num,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].pjf);
}
printf("student.txt is ok");
printf(" \n");

getrank(stu,n);//排序

for(i=0;i {
fprintf(fp2,"%s\t %d\t %d\t %d\t %d\t %f\n",stu[i].name,stu[i].num,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].pjf);
}
printf("sort.txt is ok");
printf(" \n");

n=6;
enter(stu,stuq,n);//插入额外的学生数据

for (i=0;i<5;i++)//原本有顺序，只比较一次即可，重新排序
{
if (stuq[i].pjf>stuq[i+1].pjf)
{
tmp=stuq[i];
stuq[i]=stuq[i+1];
stuq[i+1]=tmp;
}
}

for(i=0;i {
fprintf(fp3,"%s\t %d\t %d\t %d\t %d\t %f\n",stuq[i].name,stuq[i].num,stuq[i].score1,stuq[i].score2,stuq[i].score3,stuq[i].pjf);
}
printf("sort2.txt is ok");
printf(" ");

fclose(fp1);
fclose(fp2);
fclose(fp3);
fp1=NULL;
fp2=NULL;
fp3=NULL;
return 0;
}

把上边代码直接放一个cpp文件中，直接在vc++6.0打开，编译连接即可

回答2：

#include float Fahrenheit_to_centigrade(int fahrenheit){ return 1.0*5/9*(fahrenheit-32);}void main(){ //printf("please input fahrenheit to convert!\n"); int fahrenheit;// scanf("%d", &fahrenheit);// printf("centigrade is %.2f\n",Fahrenheit_to_centigrade(fahrenheit)); printf("华氏温度\t摄氏温度\n"); for(fahrenheit = 20;fahrenheit<=40;fahrenheit+=5) printf("%d\t%.2f\n", fahrenheit, Fahrenheit_to_centigrade(fahrenheit));}
请采纳。

回答3：

函数的用处就是找到数组中一个最大的数，并返回他的标号

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