2 Attachment(s)
Help working with array of structures!
Hi alll!
I've created this C program(see attachments please) to accept names, roll numbers and percentages of 6 students. I've created an array of 6 structs each comprising above mentioned variables. The aim is to display the records in the descending order of the students' percentages(using bubble sort) I've written two copies of the program: one which uses a function for sorting and another in which all code is written in main. Although there aren't any errors in both of them, I ain't getting the desired results for any copy.
P.S. I tried using pointers too with no different results.
Any help would be greatly appreciated!
Just in case those attachments get deleted within one hour the program typed for you:
WITHOUT FUNCTION:
Code:
#include<stdio.h>
#include<conio.h>
#include<string.h>
struct stu
{
char name[15];
int roll_no;
float per;
};
void main()
{
int i,j;
struct stu s[6],temp;
clrscr();
for(i=0;i<6;i++)
{
printf("Enter name,roll number and percentage of student:");
scanf("%s %d %f",s[i].name,&s[i].roll_no,&s[i].per);
}
for(i=0;i<6;i++)
{
for(j=0;j<6;j++)
{
if (s[i].per<s[j].per)
{temp.per=s[i].per; //per swap//
s[i].per=s[j].per;
s[j].per=temp.per;
strcpy(temp.name,s[i].name);
strcpy(s[i].name,s[j].name); //name swap
strcpy(s[j].name,temp.name);
temp.roll_no=s[i].roll_no;
s[i].roll_no=s[j].roll_no; //roll no swap
s[j].roll_no=temp.roll_no;
}
}
}
for(i=0;i<6;i++)
{printf("%s %d %f",s[i].name,s[i].roll_no,s[i].per);
}
getch();
}
WITH SORT FUNCTION:
Code:
#include<stdio.h>
#include<conio.h>
#include<string.h>
struct stu
{
char name[15];
int roll_no;
float per;
};
void sort(struct stu *s);
void main()
{
int i;
struct stu s[6];
clrscr();
for(i=1;i<=6;i++)
{
printf("Enter name,roll number and percentage of student %d:",i);
scanf("%s %d %f",s[i].name,&s[i].roll_no,&s[i].per);
}
sort(&s[0]);
}
void sort(struct stu *s)
{
int i,j;
struct stu temp;
for(i=0;i<6;i++)
{
for(j=0;j<6;j++)
{
if((*(s+i)).per<(*(s+j)).per)
{ temp.per=(*(s+i)).per;
(*(s+i)).per=(*(s+j)).per;
(*(s+j)).per=temp.per;
strcpy(temp.name,(*(s+i)).name);
strcpy((*(s+i)).name,(*(s+j)).name);
strcpy((*(s+j)).name,temp.name);
temp.roll_no=(*(s+i)).roll_no;
(*(s+i)).roll_no=(*(s+j)).roll_no;
(*(s+j)).roll_no=temp.roll_no;
}
}
}
for(i=0;i<6;i++)
{
printf("%s %d %f",s[i].name,s[i].roll_no,s[i].per);
}
getch();
}
