学生成绩管理系统c语言版

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1、#include#include#defineNULL0#defineLTSsizeof(structmark)structmark{unsignedlongintnum;charname[20];intclas;floatmath;floatEnglish;floatcomputer;floattotal;floatver;structmark*next;};structmark*D_insertsort(structmark*head){intflag=0,a,b;structmark*f,*g,*q,*r,*s,*t;f=head;q

2、=f->next;f->next=NULL;t=f;printf("按数学请按1，按英语请按2，按微机请按3,按总成绩请按4:");scanf("%d",&a);switch(a){case1:for(q;q!=NULL;){r=q;q=q->next;r->next=NULL;if(f->math<=r->math){r->next=f;f=r;t=f;}elseif(f->math>r->math){while(f!=NULL){if(f->next!=NULL){s=f->next;if(s->math<=r->math){r->next=f->next;f->nex

3、t=r;break;}elsef=f->next;}elseif(f->next==NULL){f->next=r;break;}}}}break;case2:for(q;q!=NULL;){r=q;q=q->next;r->next=NULL;if(f->English<=r->English){r->next=f;f=r;t=f;}elseif(f->English>r->English){while(f!=NULL){if(f->next!=NULL){s=f->next;if(s->English<=r->English){r->next=f->next;f->next

4、=r;break;}elsef=f->next;}elseif(f->next==NULL){f->next=r;break;}}}}break;case3:for(q;q!=NULL;){r=q;q=q->next;r->next=NULL;if(f->computer<=r->computer){r->next=f;f=r;t=f;}elseif(f->computer>r->computer){while(f!=NULL){if(f->next!=NULL){s=f->next;if(s->computer<=r->computer){r->next=f->next;f-

5、>next=r;break;}elsef=f->next;}elseif(f->next==NULL){f->next=r;break;}}}}break;case4:for(q;q!=NULL;){r=q;q=q->next;r->next=NULL;if(f->total<=r->total){r->next=f;f=r;t=f;}elseif(f->total>r->total){while(f!=NULL){if(f->next!=NULL){s=f->next;if(s->total<=r->total){r->next=f->next;f->next=r;break

6、;}elsef=f->next;}elseif(f->next==NULL){f->next=r;break;}}}break;}default:{printf("********你的输入有错，请重新输入");}}return(t);}structmark*S_insertsort(structmark*head){intflag=0,a,b;structmark*f,*g,*q,*r,*s,*t;f=head;q=f->next;f->next=NULL;t=f;printf("按数学请按1，按英语请按2，按微机请按3,按总成绩请按4:");scanf("%d",&a

7、);switch(a){case1:for(q;q!=NULL;){r=q;q=q->next;r->next=NULL;if(f->math>=r->math){r->next=f;f=r;t=f;}elseif(f->mathmath){while(f!=NULL){if(f->next!=NULL){s=f->next;if(s->math>=r->math){r->next=f->next;f->next=r;break;}elsef=f->next;}elseif(f->n