c语言课程设计报告学生成绩管理系统.doc
#include<stdio.h>#include<string.h>#include<windows.h>#include<conio.h>void homepage(); /主界面void display(); /显示全部成绩void input(); /录入 插入void del(); /删除记录void sort(); /排序void waiting(); /等待界面void quit(); /退出界面struct student int num; char name15; float score3; float avg;int count=0; /当前学生个数int sort_type=0; /当前排序类型struct student stu10;void main() int i,k=0; char username15,pwd6; system("color 3f"); printf("nn"); printf(" tn"); printf(" t*n"); printf(" t*n"); printf(" t*n"); printf(" t* *n"); printf(" t* 欢迎使用学生成绩管理系统 *n"); printf(" t* *n"); printf(" t* *n"); printf(" t* xxxxxxxxxxx *n"); printf(" t* *n"); printf(" t* 2006.11.11 *n"); printf(" t* *n"); printf(" t*n"); printf(" t*n"); printf(" t*n"); printf(" tn"); for(i=0;i<3;i+) printf("n请输入用户名:"); gets(username); printf("n请输入6位密码:"); gets(pwd); if(strcmp(username,"s1t1102")=0)&&(strcmp(pwd,"")=0) printf("n您已经成功登录n"); k=1; for(i=0;i<20;i+) printf("."); Sleep(100); system("cls"); homepage(); break; else printf("n用户名或密码无效 请重新输入:n"); continue; if(k=0) printf("n连续输入错误3次 将退出程序n"); Sleep(2000); quit();void homepage() char n; printf("nn"); printf("tn"); printf("t*n"); printf("t* * *n"); printf("t* 1.显示成绩 * 2.录入成绩 *n"); printf("t* * *n"); printf("t*n"); printf("t* * *n"); printf("t* 3.删除记录 * 4.排序 *n"); printf("t* * *n"); printf("t*n"); printf("t* *n"); printf("t* 0.退出程序 *n"); printf("t* *n"); printf("t*n"); printf("tn"); while (n!='1')&&(n!='2')&&(n!='3')&&(n!='4')&&(n!='0') printf("n请选择:"); fflush(stdin); scanf("%c",&n); switch(n) case '1': display(); break; case '2': if(count<10) input(); else printf("记录数已满n"); Sleep(2000); system("cls"); homepage(); break; case '3': del(); break; case '4': sort(); case '0': quit(); break; default: printf("n选项错误n"); void display() int i; char c; system("cls"); switch(sort_type) case 0: printf("tt未排序:nn"); break; case 1: printf("tt按学号排序:nn"); break; case 2: printf("tt按成绩1排序:nn"); break; case 3: printf("tt按成绩2排序:nn"); break; case 4: printf("tt按成绩3排序:nn"); break; case 5: printf("tt按平均成绩排序:nn"); break; printf("t学号t姓名t成绩1t成绩2t成绩3t平均成绩n"); for(i=0;i<count;i+) printf("t%dt%st%5.2ft%5.2ft%5.2ft%5.2fn",stui.num,stui.name,stui.score0,stui.score1,stui.score2,stui.avg); printf("nn按任意键返回n"); c=getch(); system("cls"); homepage();void input() int i,numcheck; char c; system ("cls"); do printf("学号:n"); scanf("%d",&stucount.num); numcheck=1; if(stucount.num<0) printf("请输入正整数:n"); for(i=0;i<count;i+) if(stucount.num=stui.num) numcheck=0; printf("学号重复,重新输入:n"); while(!numcheck); printf("姓名:n"); fflush(stdin); gets(stucount.name); for(i=0;i<3;i+) printf("第%d门课成绩:n",i+1); scanf("%f",&stucount.scorei); stucount.avg=(stucount.score0+stucount.score1+stucount.score2)/3; printf("是否继续输入(y/n):n"); do c=getchar(); if(c='y'|c='Y') count+; if(count<10) input(); else printf("记录数已满n"); Sleep(2000); system("cls"); homepage(); else if(c='n'|c='N') count+; system("cls"); homepage(); else; while(c!='y')&&(c!='n')&&(c!='Y')&&(c!='N');void del() int i,j,del_num,match=0; char c; system("cls"); printf("请输入要删除的学生学号:n"); scanf("%d",&del_num); waiting(); for(i=0;i<count;i+) if(stui.num=del_num) match=1; for(j=i;j<count;j+) /* stuj.num=stuj+1.num; strcpy(stuj.name,stuj+1.name); stuj.score0=stuj+1.score0; stuj.score1=stuj+1.score1; stuj.score2=stuj+1.score2; stuj.avg=stuj+1.avg; */ stuj=stuj+1; if(!match) printf("没有要找的学号.n"); printf("是否继续删除?(y/n)"); fflush(stdin); do c=getchar(); if(c='y'|c='Y') count-; del(); else if(c='n'|c='N') count-; system("cls"); homepage(); else; while(c!='y')&&(c!='n');void sort() int i,j; int choice; struct student temp; system("cls"); printf("tt请选择排序功能:n"); printf("t1.按学号排序n"); printf("t2.按成绩1排序n"); printf("t3.按成绩2排序n"); printf("t4.按成绩3排序n"); printf("t5.按平均成绩排序n"); do scanf("%d",&choice); while(choice!=1)&&(choice!=2)&&(choice!=3)&&(choice!=4)&&(choice!=5); switch(choice) case 1: for(i=0;i<count-1;i+) for(j=0;j<count-i-1;j+) if(stuj.num>stuj+1.num) temp=stuj; stuj=stuj+1; stuj+1=temp; sort_type=1; break; case 2: for(i=0;i<count-1;i+) for(j=0;j<count-i-1;j+) if(stuj.score0<stuj+1.score0) temp=stuj; stuj=stuj+1; stuj+1=temp; sort_type=2; break; case 3: for(i=0;i<count-1;i+) for(j=0;j<count-i-1;j+) if(stuj.score1<stuj+1.score1) temp=stuj; stuj=stuj+1; stuj+1=temp; sort_type=3; break; case 4: for(i=0;i<count-1;i+) for(j=0;j<count-i-1;j+) if(stuj.score2<stuj+1.score2) temp=stuj; stuj=stuj+1; stuj+1=temp; sort_type=4; break; case 5: for(i=0;i<count-1;i+) for(j=0;j<count-i-1;j+) if(stuj.avg<stuj+1.avg) temp=stuj; stuj=stuj+1; stuj+1=temp; sort_type=5; break; system("cls"); waiting(); homepage();void waiting() int i; printf("nt请稍侯."); for(i=0;i<25;i+) switch(i%4) case 1:printf("b");break; case 2:printf("b-");break; case 3:printf("b/");break; case 0:printf("b|");break; Sleep(100); system("cls");void quit() system("cls"); printf("nn"); printf("tn"); printf("t*n"); printf("t* *n"); printf("t* 谢谢使用本程序 *n"); printf("t*n"); printf("tnn");
