c语言实现的学生信息查询系统
#include 0;
scanf("%ld %s",&person[i].num,person[i].name);
int l=strlen(person[i].name);
if(l>=8&&l<=14)//判断姓名的长度
{
printf("INPUT THE GRADES OF COURSES as MT EN PH\n");
for(j=0; jscanf("%u",&person[i].score[j]);
person[i].sumS=person[i].sumS+person[i].score[j];
}
person[i].aveS=person[i].sumS/n;
}
else
{
printf("YOUR NAME IS INFORMAL!!!PLEASE ENTER IT AGAIN!!!\n");
printf("IT MUST HAVE 8--14 ALPHAS\n");
i--;
}
}
}
void a(STU person[],int sumc[],float avec[],int m,int n)//计算学生的总分及平均分
{
int i,j;
for(i=0; i0;
for(j=0; jvoid print(STU person[],int sumc[],float avec[],int m,int n)//输出学生的信息以及每门课的总分
{
int i,j;
for(i=0; iprintf("%13ld%15s ",person[i].num,person[i].name);
for(j=0; jprintf("%d\t",person[i].score[j]);
}
printf("%.0f\t%.1f\n",person[i].sumS,person[i].aveS);
}
printf("Sumofcourse\t\t\t");
for(j=0; jprintf("%d\t",sumc[j]);
}
printf("\nAveofcourse\t\t\t");
for(j=0; jprintf("%.1f\t",avec[j]);
}
printf("\n");
}
void sort1(STU person[],int m,int n)//按成绩由小到大排序
{
int i,j;
STU temp;//temp为中间变量
for(i=1; i//冒泡排序
{
for(j=0; j<=m-i-1; j++)
{
if(person[j].sumS>person[j+1].sumS)
{
temp=person[j+1];
person[j+1]=person[j];
person[j]=temp;
}
}
}
}
void print1(STU person[],int m,int n,int min[])//按成绩由小到大输出成绩
{
int i,j,k=m;
printf("Number\t Name\t MT EN PH SUM RANK\n");
for(i=0; iprintf("%.ld%13s ",person[i].num,person[i].name);
for(j=0; jprintf("%4d",person[i].score[j]);
}
printf(" %.0f\t",person[i].sumS);
min[i]=k;
k--;
printf("%d\n",min[i]);
}
}
void print2(STU person[],int m,int n,int min[])//按成绩由大到小输出成绩
{
int i,j;
printf("Number\t Name\t MT EN PH SUM RANK\n");
for(i=m-1; i>=0; i--)
{
printf("%.ld%13s ",person[i].num,person[i].name);
for(j=0; jprintf("%4d",person[i].score[j]);
}
printf(" %.0f\t",person[i].sumS);
printf("%d\n",min[i]);
}
}
void sort3(STU person[],int m,int n,int min[])//按学号由小到大排序
{
int i,j;//temp，temp1为中间变量
STU temp;
int temp1;
for(i=1; ifor(j=0; j<=m-i-1; j++)
{
if(person[j].num>person[j+1].num)
{
temp=person[j+1];
person[j+1]=person[j];
person[j]=temp;
temp1=min[j+1];
min[j+1]=min[j];
min[j]=temp1;
}
}
}
}
void print3(STU person[],int m,int n,int min[])//按学号由小到大输出成绩
{
int i,j;
for(i=0; iprintf("Number\t Name\t MT EN PH SUM RANK\n");
printf("%.ld%13s ",person[i].num,person[i].name);
for(j=0; jprintf("%4d",person[i].score[j]);
}
printf(" %.0f\t",person[i].sumS);
printf("%d\n",min[i]);
}
}
void sort4(STU person[],int m,int n,int min[])//按姓名字母顺序排序
{
int i,j,temp1;
STU temp;
for(j=1; jfor(i=0; i<=m-j-1; i++)
{
if(strcmp(person[i].name,person[i+1].name)>0)
{
temp=person[i+1];
person[i+1]=person[i];
person[i]=temp;
temp1=min[i+1];
min[i+1]=min[i];
min[i]=temp1;
}
}
}
}
void print4(STU person[],int m,int n,int min[])//按姓名字母顺序输出成绩
{
int i,j;
printf("Number\t Name\t MT EN PH SUM RANK\n");
for(i=0; iprintf("%.ld%13s ",person[i].num,person[i].name);
for(j=0; jprintf("%4d",person[i].score[j]);
}
printf(" %.0f\t",person[i].sumS);
printf("%d\n",min[i]);
}
}
//按学号查询学生信息
int numsearch(STU person[],int m,long x)//x为学号
{
int i;
for(i=0; iif(person[i].num==x)
return i;
}
return -1;
}
//按姓名查找
int namesearch(STU person[],int m,char y[])//x为姓名
{
int i;
for(i=0; iif(strcmp(y,person[i].name)==0)
return i;
}
return -1;
}
void writetofile(STU person[],int n)//将学生信息写入文件
{
FILE *fp;
if((fp=fopen("1.txt","w"))==NULL)
{
printf("Faliure to open file\n");
exit(0);
}
fwrite(person,sizeof(STU),n,fp);
fclose(fp);
}
void readfromfile(STU person[])//从文件中读取学生信息并打印
{
FILE *fp;
int i;
if((fp=fopen("1.txt","r"))==NULL)
{
printf("Faliure to open file\n");
exit(0);
}
for(i=0; !feof(fp); i++)
{
fread(&person[i],sizeof(STU),1,fp);
}
fclose(fp);
}