张可鑫 C语言课程设计_学生成绩管理系统(8)

for (i =0; i < 80; i++)

putchar('='); putchar('\n'); goto lab; } }

/*-----------------插入子程序-------------*/ void insert(STUDENT *data, int *len) {

int no, pos;

double Chinese, math, English, mark_ave, mark_tot; int i;

char name[MAX_NAME];

lab: printf("%s\n", "输入新的记录，退出当前菜单请输入-1."); printf("%s\n", "格式：学号");

printf("%s\n", " 姓名 语文 数学 英语"); scanf("%d", &no);

if (no == -1) return; data[*len].no = no;

scanf("%s %lf %lf %lf", name, &Chinese, &math, &English); mark_ave=(Chinese+math+English)/3.0; mark_tot=Chinese+math+English; pos = 0;

while ((data[pos].mark_ave < mark_ave) && (pos < *len) ) pos ++;

for (i = *len-1; i >= pos; i--) data[i+1] = data[i]; data[pos].no = no;

strcpy(data[pos].name, name); data[pos].Chinese = Chinese; data[pos].math = math;

data[pos].English = English; data[pos].mark_ave = mark_ave; data[pos].mark_tot = mark_tot; (*len)++; goto lab; }

/*-------------删除子程序--------------*/ void delete_item(STUDENT *data, int *len) {

int no, i, pos; lab: pos=0;

printf("%s\n", "输入需要删除的学生的学号，退出当前菜单请输入-1.")