#includestdio.h
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#includestdlib.h
int N1, N2, kk1, kk2, kk3;
struct couse * head1;
struct student * head2;
struct couse//课程信息结构体
{
int num1;
char name1[20];
int score;
int nelepeo;//课程已选人数
int Melepeo;//课程人数上限
struct couse * next;
};
struct student//学生信息结构体
{
int num2;
char name2[20];
int nelenum[50];//已选课程编号
int nelen;//已选课程数量
struct student * next;
};
void Ms()
{
for (kk1 = 0; kk11100; kk1++)
for (kk2 = 0; kk21200; kk2++)
for (kk3 = 0; kk31200; kk3++);
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1, *p2;
N1 = 0;
p1 = p2 = (struct couse*)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d", p1-num1, p1-name1, p1-score, p1-Melepeo);
p1-nelepeo = 0;
head1 = NULL;
while (p1-num1 != 0)
{
N1 = N1 + 1;
if (N1 == 1)head1 = p1;
else p2-next = p1;
p2 = p1;
p1 = (struct couse *)malloc(sizeof(struct couse));
scanf("%d%s%d%d", p1-num1, p1-name1, p1-score, p1-Melepeo);
p1-nelepeo = 0;
}
p2-next = NULL;
}
void filec()//录入键盘子函数(从文件录入)
{
FILE * fp;
char filepath[20];
struct couse *p1, *p2;
N1 = 0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if ((fp = fopen(filepath, "r")) == NULL)
{
printf("找不到%s文件!\n", filepath);
exit(0);
}
p1 = p2 = (struct couse*)malloc(sizeof(struct couse));
fscanf(fp, "%d%s%d%d%d", p1-num1, p1-name1, p1-score, p1-nelepeo, p1-Melepeo);
head1 = NULL;
while (!feof(fp))
{
N1 = N1 + 1;
if (N1 == 1)head1 = p1;
else p2-next = p1;
p2 = p1;
p1 = (struct couse *)malloc(sizeof(struct couse));
fscanf(fp, "%d%s%d%d%d", p1-num1, p1-name1, p1-score, p1-nelepeo, p1-Melepeo);
}
p2-next = NULL;
}
void inputc()//录入课程主函数
{
int i;
printf("\t\t\t录入课程信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d", i);
switch (i)
{
case(1) : keyboardc(); break;
case(2) : filec(); break;
case(3) : break;
}
}
void insertc(struct couse *incouse)//课程管理子函数(增加课程)
{
struct couse *p0, *p1, *p2;
p1 = head1;
p0 = incouse;
if (head1 == NULL)
{
head1 = p0;
p0-next = NULL;
}
else
{
while ((p0-num1 p1-num1) (p1-next != NULL))
{
p2 = p1;
p1 = p1-next;
}
if (p0-num1 = p1-num1)
{
if (head1 == p1) head1 = p0;
else p2-next = p0;
p0-next = p1;
}
else
{
p1-next = p0;
p0-next = NULL;
}
}
N1 = N1 + 1;
}
void delc(int num1)//课程管理子函数(删除课程)
{
struct couse *p1, *p2;
if (head1 == NULL)
{
printf("\n没有课程,无法删除!\n");
goto end;
}
p1 = head1;
while (num1 != p1-num1 p1-next != NULL)
{
p2 = p1;
p1 = p1-next;
}
if (num1 == p1-num1)
{
if (p1 == head1) head1 = p1-next;
else p2-next = p1-next;
printf("已删除该编号课程!\n");
N1 = N1 - 1;
}
else printf("无该编号的课程!\n");
end:;
}
void managementc()//课程管理主函数
{
struct couse * incouse;
int i, num1;
printf("\t\t\t课程管理\n");
printf("1.新增课程\n");
printf("2.删除课程\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d", i);
switch (i)
{
case(1) :
{
incouse = (struct couse *)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d", incouse-num1, incouse-name1, incouse-score, incouse-Melepeo);
incouse-nelepeo = 0;
insertc(incouse);
break;
}
case(2) :
{
printf("请输入要删除课程的编号:\n");
scanf("%d", num1);
delc(num1);
break;
}
case(3) : break;
}
}
void keyboards()//录入学生信息子函数(从键盘录入)
{
int i;
struct student *p1, *p2;
N2 = 0;
p1 = p2 = (struct student *)malloc(sizeof(struct student));
printf("学生学号\t学生姓名\n");
scanf("%d%s", p1-num2, p1-name2);
p1-nelen = 0;
for (i = 0; i20; i++) p1-nelenum[i] = 0;
head2 = NULL;
while (p1-num2 != 0)
{
N2 = N2 + 1;
if (N2 == 1)head2 = p1;
else p2-next = p1;
p2 = p1;
p1 = (struct student *)malloc(sizeof(struct student));
scanf("%d%s", p1-num2, p1-name2);
p1-nelen = 0;
for (i = 0; i20; i++) p1-nelenum[i] = 0;
}
p2-next = NULL;
}
void files()//录入学生信息子函数(从文件录入)
{
int i = 0;
FILE * fp;
char filepath[20];
struct student *p1, *p2;
N2 = 0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if ((fp = fopen(filepath, "r")) == NULL)
{
printf("找不到%s文件!\n", filepath);
exit(0);
}
p1 = p2 = (struct student*)malloc(sizeof(struct student));
fread(p1, sizeof(struct student), 1, fp);
head2 = NULL;
while (!feof(fp))
{
i = 0;
N2 = N2 + 1;
if (N2 == 1)head2 = p1;
else p2-next = p1;
p2 = p1;
p1 = (struct student *)malloc(sizeof(struct student));
fread(p1, sizeof(struct student), 1, fp);
}
p2-next = NULL;
}
void inputs()//录入学生信息主函数
{
int i;
printf("\t\t\t录入学生信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d", i);
switch (i)
{
case(1) : keyboards(); break;
case(2) : files(); break;
case(3) : break;
}
}
void inserts(struct student * incouse)//学生信息管理子函数(填加学生信息)
{
struct student *p0, *p1, *p2;
p1 = head2;
p0 = incouse;
if (head2 == NULL)
{
head2 = p0;
p0-next = NULL;
}
else
{
while ((p0-num2 p1-num2) (p1-next != NULL))
{
p2 = p1;
p1 = p1-next;
}
if (p0-num2 = p1-num2)
{
if (head2 == p1) head2 = p0;
else p2-next = p0;
p0-next = p1;
}
else
{
p1-next = p0;
p0-next = NULL;
}
}
N2 = N2 + 1;
}
void dels(int num2)//学生信息管理子函数(删除学生信息)
{
struct student *p1, *p2;
if (head2 == NULL)
{
printf("\n没有该学生信息,无法删除!\n");
goto end;
}
p1 = head2;
while (num2 != p1-num2 p1-next != NULL)
{
p2 = p1;
p1 = p1-next;
}
if (num2 == p1-num2)
{
if (p1 == head2) head2 = p1-next;
else p2-next = p1-next;
printf("已删除该学生信息!\n");
N2 = N2 - 1;
}
else printf("无该学号的学生!\n");
end:;
}
void managements()//学生信息管理主函数
{
struct student * incouse;
int i, num2;
printf("\t\t\t学生信息管理\n");
printf("1.新增学生信息\n");
printf("2.删除学生信息\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d", i);
switch (i)
{
case(1) :
{
incouse = (struct student *)malloc(sizeof(struct student));
incouse-nelen = 0;
incouse-nelenum[0] = 0;
printf("学生学号\t学生姓名\n");
scanf("%d%s", incouse-num2, incouse-name2);
inserts(incouse);
break;
}
case(2) :
{
printf("请输入要删除学生的学号:\n");
scanf("%d", num2);
dels(num2);
break;
}
case(3) : break;
}
}
void elect(struct student * s)//选课
{
struct couse * p;
int num1, i;
printf("请输入要选课的编号:\n");
scanf("%d", num1);
for (i = 0; s-nelenum[i] != 0; i++);
s-nelenum[i] = num1;
(s-nelen)++;
p = head1;
while (p-num1 != num1) p = p-next;
(p-nelepeo)++;
}
void cheak()//学生选课子函数(查询可选课程)
{
char e;
struct couse * c;
struct student * s;
int num2, i, j = 0, t = 0;
printf("请输入你的学号:");
scanf("%d", num2);
s = head2;
while (s-num2 != num2 s-next != NULL) s = s-next;
if (s-num2 != num2)
{
printf("不存在你的信息,请进入主菜单录入你的信息!\n");
goto end;
}
c = head1;
printf("你的可选课程编号:\n");
while (c != NULL)
{
for (t = 0, i = 0; s-nelenum[i] != 0; i++)
{
if (c-num1 == s-nelenum[i]) t = 1;
}
if (t == 0 (c-nelepeo != c-Melepeo))
{
printf("%d\n", c-num1);
j++;
}
c = c-next;
}
if (j == 0)
{
printf("你已选完所有课程,无法再多选!\n");
goto end;
}
printf("选课(y/n)?:\n");
getchar();
e = getchar();
i = 0;
while (e == 'y')
{
elect(s);
printf("继续选课(y/n)?:\n");
getchar();
e = getchar();
}
end:;
}
void back(struct student * p)//退课
{
struct couse * p1;
int num1, i, j;
printf("请输入你要退掉的课程编号:\n");
scanf("%d", num1);
p1 = head1;
while (p1-num1 != num1) p1 = p1-next;
for (i = 0; p-nelenum[i] != num1; i++);
for (j = i; p-nelenum[j] != 0; j++) p-nelenum[j] = p-nelenum[j + 1];
p-nelenum[--j] = 0;
(p1-nelepeo)--;
printf("退课成功!\n");
}
void hcheak()//学生选课子函数(查询已选课程)
{
char c;
struct couse * p0;
struct student * p;
int num2, i, f = 0;
printf("请输入学号:\n");
scanf("%d", num2);
p = head2;
while (p-num2 != num2 p != NULL) p = p-next;
if (p == NULL)
{
printf("不存在你的信息,请回主菜单录入信息:\n");
goto end;
}
printf("已选课程编号:\n");
if (p-nelenum[0] == 0)
{
printf("你还没选课!\n");
goto end;
}
for (i = 0; p-nelenum[i] != 0; i++)
{
printf("%d\n", p-nelenum[i]);
p0 = head1;
while (p0-num1 != p-nelenum[i]) p0 = p0-next;
f = f + p0-score;
}
printf("总学分:%d\n", f);
printf("是否进行退课(y/n)?");
getchar();
c = getchar();
while (c == 'y')
{
back(p);
printf("继续退课(y/n)?");
getchar();
c = getchar();
(p-nelen)--;
}
end:;
}
void elective()//学生选课主函数
{
int i;
printf("\t\t\t学生选课\n");
printf("1.查询可选课程\n");
printf("2.查询已选课程\n");
printf("3.返回主菜单\n");
printf("请输入(1~3):\n");
scanf("%d", i);
switch (i)
{
case(1) : cheak(); break;
case(2) : hcheak(); break;
case(3) : break;
}
}
void listc()//输出课程信息
{
struct couse * p;
p = head1;
printf("课程编号 课程名称 学分 课程已选人数 课程人数上限\n");
while (p != NULL)
{
printf("%-8d%10s%6d%8d%12d\n", p-num1, p-name1, p-score, p-nelepeo, p-Melepeo);
p = p-next;
}
}
void lists()//输出学生信息
{
struct student * p;
p = head2;
printf("学生学号 学生姓名 已选课程数量\n");
while (p != NULL)
{
printf("%-4d %10s %6d\n", p-num2, p-name2, p-nelen);
p = p-next;
}
}
void intoc()//存储课程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("输入课程信息要保存的文件路径:");
getchar();
gets(filepath);
if ((fp = fopen(filepath, "w")) == NULL)
{
printf("\n保存失败!");
exit(0);
}
p = head1;
while (p != NULL)
{
fprintf(fp, "%d %s %d %d %d\n", p-num1, p-name1, p-score, p-nelepeo, p-Melepeo);
p = p-next;
}
fclose(fp);
printf("课程信息已保存在%s中!\n", filepath);
}
void intos()//存储学生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("输入学生信息要保存的文件路径:");
getchar();
gets(filepath);
if ((fp = fopen(filepath, "w")) == NULL)
{
printf("\n保存失败!");
exit(0);
}
p = head2;
while (p != NULL)
{
fwrite(p, sizeof(struct student), 1, fp);
p = p-next;
}
fclose(fp);
printf("学生信息已保存在%s中!\n", filepath);
}
void into()//存储信息
{
int i;
printf("1.存储课程信息\n");
printf("2.存储学生信息\n");
printf("3.返回主菜单\n");
printf("请输入(1~3)\n");
scanf("%d", i);
switch (i)
{
case(1) : intoc(); break;
case(2) : intos(); break;
case(3) : break;
}
}
void store()//信息主函数
{
int i;
printf("\t\t系统信息查看及存储\n");
printf("1.查看课程信息\n");
printf("2.查看学生信息\n");
printf("3.存储信息\n");
printf("4.返回主菜单\n");
printf("请输入(1~4):\n");
scanf("%d", i);
switch (i)
{
case(1) : listc(); break;
case(2) : lists(); break;
case(3) : into(); break;
case(4) : break;
}
}
int main()//主函数
{
int i;
start:
printf("\n\t\t\t欢迎使用学生选课系统!\n");
printf("菜单:\n");
printf("1.录入课程信息\n");
printf("2.课程管理\n");
printf("3.录入学生信息\n");
printf("4.学生信息管理\n");
printf("5.学生选课\n");
printf("6.系统信息查看及存储\n");
printf("7.退出系统\n");
printf("\n请输入菜单选项(1~7):\n");
scanf("%d", i);
if (i1 || i7)
{
printf("输入错误,请重输:\n");
goto start;
}
switch (i)
{
case(1) :
{
system("cls");
inputc();
goto start;
break;
}
case(2) :
{
system("cls");
managementc();
goto start;
break;
}
case(3) :
{
system("cls");
inputs();
goto start;
break;
}
case(4) :
{
system("cls");
managements();
goto start;
break;
}
case(5) :
{
system("cls");
elective();
goto start;
break;
}
case(6) :
{
system("cls");
store();
goto start;
break;
}
case(7) :
{
system("cls");
printf("感谢使用本系统!\n\n再见!\n");
}
}
return(0);
}
1、首先打开c语言编辑器,新建一个C语言的文件,文件中引入C语言的头文件,新建一个main函数,函数中设置一个10个元素的数组以及一个用来求和的变量2、之后用一个for循环遍历数组,每次都从scanf中取到用户输入的数并存入数组中,存完后再用sum加这个数,如此便能求出数组内元素的和了:3、最后运行程序,输入10个数即可看到结果。以上就是用c语言从键盘输入10个数存入数组并求和的方法
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c语言怎么用函数的定义和调用公式存入10个数据
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C语言如何通过输入数据来得出函数
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您好亲,C语言有多个函数可以从键盘获得用户输入,它们分别是:scanf():和 printf() 类似,scanf() 可以输入多种类型的数据。getchar()、getche()、getch():这三个函数都用于输入单个字符。gets():获取一行数据,并作为字符串处理。scanf() 是最灵活、最复杂、最常用的输入函数,上节我们已经进行了讲解,本节接着讲解剩下的函数,也就是字符输入函数和字符串输入函数。
函数参数有传值和传址两种,你只要把数组的首地址传过去就可以了,函数参数是个指针,接收数组首地址,就可以在子函数中用指针调用数组中的数据。