自己写出来好有成就感！

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
#include<time.h>

struct student
{
int xuehao;
char name[20];
int k1,k2,k3;
double k0; //总成绩
}a[1000],b[1000];

void c_information(int n); //1
void sum(int n,double r1,double r2,double r3); //2
void charu(int n,int N); //3
void delete_(int n,int DN); //4
void founum(int n,int fou_num); //5
void founame(int n,char fou_name[]); //6
void show(int n); //7

int main()
{
int a/*指令数字*/, n/*循环总数*/, m/*插入判断数*/ ;
int N/*3*/, NN/*4*/, fou_num/*5*/;
char fou_name[100]; /*6*/
scanf ("%d ",&a);
while(a != 0)
{
if (a==1)
{
scanf ("%d ",&n);
c_information(n);
}
else if(a==2)
{
double r1,r2,r3;
n=n;
scanf("%lf %lf %lf",&r1,&r2,&r3);
sum(n,r1,r2,r3);
}
else if(a==3)
{
n=n;
scanf("%d",&N);
}
else if(a==4)
{
scanf("%d",&NN);
if(NN<=n)
{
delete_(n,NN);
n-1;
}
}
else if(a==5)
{
scanf("%d",&fou_num);
founum(n,fou_num);
printf("\n");
}
else if(a==6)
{
scanf("%s",fou_name);
founame(n,fou_name);
printf("\n");
}
else if(a==7)
{
show(n);
printf("\n");
}
scanf("%d ",&a);
}
return 0 ;
}

void c_information(int n)
{
int i;
for(i=0;i<n;i++)
{
scanf("%d %s %d %d %d ",&a[i].xuehao, a[i].name, &a[i].k1, &a[i].k2, &a[i].k3 );
a[i].k0=0.0;
}
}

void sum(int n,double r1,double r2,double r3)
{
int i;
for(i=0;i<n;i++)
{
a[i].k0 = a[i].k1*r1 + a[i].k2*r2 + a[i].k3*r3 ;
}
}

void charu(int n,int N)
{
int i;
if (n>=N)
{
for(i=n;i>=N;i--)
{
a[i].xuehao=a[i-1].xuehao;
strcpy (a[i].name,a[i-1].name);
a[i].k1=a[i-1].k1;
a[i].k2=a[i-1].k2;
a[i].k3=a[i-1].k3;
a[i].k0=a[i-1].k0;
}
scanf("%d %s %d %d %d ",&a[N-1].xuehao, a[N-1].name, &a[N-1].k1, &a[N-1].k2, &a[N-1].k3 );
a[N-1].k0=0.0;
}
else
{
scanf("%d %s %d %d %d ",&a[n].xuehao, a[n].name, &a[n].k1, &a[n].k2, &a[n].k3 );
}
}

void delete_(int n,int NN)
{
int i,l;
a[NN-1].k0=-1;
l=strlen(a[NN-1].name); //计算长度
for(i=0;i<l;i++)
{
a[NN-1].name[i]='\0';
}
a[NN-1].k1=0;
a[NN-1].k2=0;
a[NN-1].k3=0;
a[NN-1].k0=0.0;
for(int i=(NN-1);i<(n-1);i++)
{
a[i].xuehao=a[i+1].xuehao;
strcpy(a[i].name,a[i+1].name);
a[i].k1=a[i+1].k1;
a[i].k2=a[i+1].k2;
a[i].k3=a[i+1].k3;
a[i].k0=a[i+1].k0;
}
a[n-1].xuehao=-1;
l=strlen(a[n-1].name);
for(int i=0;i<l;i++)
{
a[n-1].name[i]='\0';
}
a[n-1].k1=0;
a[n-1].k2=0;
a[n-1].k3=0;
a[n-1].k0=0.0;
}

void founum(int n,int fou_num)
{
int flag_num=0;
for(int i=0;i<n;i++)
{
if(a[i].xuehao==fou_num)
{
printf("学号:%d 姓名:%s 成绩1:%d 成绩2:%d 成绩3:%d 综合成绩:%.2lf\n",a[i].xuehao,a[i].name,a[i].k1,a[i].k2,a[i].k3,a[i].k0);
flag_num=1;
break;
}
}
if(flag_num==0)
{
printf("Not Found.\n");
}
}

void founame(int n,char *fou_name)
{
int flag_name=0;
for(int i=0;i<n;i++)
{
if(strcmp(a[i].name,fou_name)==0)
{
printf("学号:%d 姓名:%s 成绩1:%d 成绩2:%d 成绩3:%d 综合成绩:%.2lf\n",a[i].xuehao,a[i].name,a[i].k1,a[i].k2,a[i].k3,a[i].k0);
flag_name=1;
break;
}
}
if(flag_name==0)
{
printf("Not Found.\n");
}
}

void show(int n)
{
for(int i=0;i<n;i++)
{
if(a[i].xuehao!=-1)
{
printf("学号:%d 姓名:%s 成绩1:%d 成绩2:%d 成绩3:%d 综合成绩:%.2lf\n",a[i].xuehao,a[i].name,a[i].k1,a[i].k2,a[i].k3,a[i].k0);
}
}
}

各位大神，来吧，展示！

weixin_53081600

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