Write a program to store name and mark of 20 students. Sort the data according to mark in descending order and display them.

#include<stdio.h>

#include<conio.h>

#include<string.h>

struct student

{

char name [25];

int mark;

}std[10];

void main()

{

 char temp[25];

 int i,j,tm;

 printf("Enter names and marks for 20 students\n");

 for(i=0;i<20;i++)

 {

 scanf("%s",std[i].name);

 scanf("%d",&std[i].mark);

 }

 for(i=0;i<20;i++)

 {

 for(j=i+1;j<20;j++)

 {

 if(std[i].mark<std[j].mark)

 {

 tm=std[i].mark;

 std[i].mark=std[j].mark;

 std[j].mark=tm;

 strcpy(temp,std[i].name);

 strcpy(std[i].name,std[j].name);

 strcpy(std[j].name,temp);

 }

 }

 }

 printf("\nThe sorted names and marks in descending order according to marks are\n");

 for(i=0;i<20;i++)

 printf("\n%s\t%d",std[i].name,std[i].mark);

 getch();

 }