C program to create student structure

Write a ‘C’ program to create student structure having field roll no, stud name,
class, pass this entire structure to function and display the structure elements.

#include<stdio.h>
#include<conio.h>
struct student
{
int rollno;
char sname[20];
char sclass[10];
};
void disp(struct student);
void main()
{
struct student s;
clrscr();
printf("enter the rollno,sname&sclass");
scanf("%d%s%s",&s.rollno,&s.sname,&s.sclass);
disp(s);
getch();
}
void disp(struct student s)
{
printf("%d%s%s",s.rollno,s.sname,s.sclass);
}

Write a ‘C’ program to reverse an array elements using dynamic memory allocation.

Write a ‘C’ program to reverse an array elements using dynamic memory allocation.

#include<stdio.h>
#include<conio.h>
#include<malloc.h>
void main()
{
int n,i;
int *p;
clrscr();
printf("enter the size");
scanf("%d",&n);
p=(int*)malloc(sizeof(int)*n);
for(i=0;i<n;i++)
{
scanf("%d",&p[i]);
}
for(i=n-1;i>=0;i--)
{
printf("%d",p[i]);
}
getch();
}