Program to create , access structure
 #include<stdio.h>  #include<string.h>   typedef struct Student  {  int roll;  char name[50];  int m[3];  int tot;  float avg;  char grade;  }std;    void insertdata(std [],int);  void dispdata(std [],int);  void topper(std [],int);  void topper_each_sub(std [],int);  void arrang_by_name(std [],int);   int main()  {  std s[50];  int m;  printf("Enter the total number of students :");  scanf("%d",&m);  printf("\nEnter the records for %d students",m);  insertdata(s,m);  printf("\nRecords of %d students : ",m);  dispdata(s,m);  printf("\nTopper in the department : ");  topper(s,m);   printf("\nTopper in each subjects : ");  topper_each_sub(s,m);  printf("\nStudent's record in ascending order of name : ");  arrang_by_name(s,m);  dispdata(s,m);  return 0;  }    void insertdata(std p[],int k)  {  int i,j;   for(i=0;i<k;i++)  {  printf("\nInsert records for student %d : ",i+1);  printf(...