#include<stdio.h>
struct student
{
int rollno;
char name[30];
float mark;
}stud;
// FUNCTION TO INSERT RECORDS TO THE FILE
void insert()
{
FILE *fp;
fp = fopen("Record", "a");
printf("Enter the Roll no :");
scanf("%d", &stud.rollno);
printf("Enter the Name :");
scanf("%s", &stud.name);
printf("Enter the mark :");
scanf("%f", &stud.mark);
fwrite(&stud, sizeof(stud), 1, fp);
fclose(fp);
}
// FUNCTION TO DISPLAY RECORDS
void disp()
{
FILE *fp1;
fp1 = fopen("Record", "r");
printf("\nRoll Number\tName\tMark\n\n");
while (fread(&stud, sizeof(stud), 1, fp1))
printf(" %d\t\t%s\t%.2f\n", stud.rollno, stud.name, stud.mark);
fclose(fp1);
}
// FUNCTION TO SEARCH THE GIVEN RECORD
void search()
{
FILE *fp2;
int r, s, avl;
printf("\nEnter the Roll no you want to search :");
scanf("%d", &r);
avl = avlrollno(r);
if (avl == 0)
printf("Roll No %d is not available in the file\n",r);
else
{
fp2 = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fp2))
{
s = stud.rollno;
if (s == r)
{
printf("\nRoll no = %d", stud.rollno);
printf("\nName = %s", stud.name);
printf("\nMark = %.2f\n", stud.mark);
}
}
fclose(fp2);
}
}
// FUNCTION TO DELETE A RECORD
void deletefile()
{
FILE *fpo;
FILE *fpt;
int r, s;
printf("Enter the Roll no you want to delete :");
scanf("%d", &r);
if (avlrollno(r) == 0)
printf("Roll no %d is not available in the file\n", r);
else
{
fpo = fopen("Record", "r");
fpt = fopen("TempFile", "w");
while (fread(&stud, sizeof(stud), 1, fpo))
{
s = stud.rollno;
if (s != r)
fwrite(&stud, sizeof(stud), 1, fpt);
}
fclose(fpo);
fclose(fpt);
fpo = fopen("Record", "w");
fpt = fopen("TempFile", "r");
while (fread(&stud, sizeof(stud), 1, fpt))
fwrite(&stud, sizeof(stud), 1, fpo);
printf("\nRECORD DELETED\n");
fclose(fpo);
fclose(fpt);
}
}
// FUNCTION TO UPDATE THE RECORD
void update()
{
int avl;
FILE *fpt;
FILE *fpo;
int s, r, ch;
printf("Enter roll number to update:");
scanf("%d", &r);
avl = avlrollno(r);
if (avl == 0)
{
printf("Roll number %d is not Available in the file", r);
}
else
{
fpo = fopen("Record", "r");
fpt = fopen("TempFile", "w");
while (fread(&stud, sizeof(stud), 1, fpo))
{
s = stud.rollno;
if (s != r)
fwrite(&stud, sizeof(stud), 1, fpt);
else
{
printf("\n\t1. Update Name of Roll Number %d", r);
printf("\n\t2. Update Mark of Roll Number %d", r);
printf("\n\t3. Update both Name and Mark of Roll Number %d", r);
printf("\nEnter your choice:");
scanf("%d", &ch);
switch (ch)
{
case 1:
printf("Enter Name:");
scanf("%s", &stud.name);
break;
case 2:
printf("Enter Mark : ");
scanf("%f", &stud.mark);
break;
case 3:
printf("Enter Name: ");
scanf("%s", &stud.name);
printf("Enter Mark: ");
scanf("%f", &stud.mark);
break;
default:
printf("Invalid Selection");
break;
}
fwrite(&stud, sizeof(stud), 1, fpt);
}
}
fclose(fpo);
fclose(fpt);
fpo = fopen("Record", "w");
fpt = fopen("TempFile", "r");
while (fread(&stud, sizeof(stud), 1, fpt))
{
fwrite(&stud, sizeof(stud), 1, fpo);
}
fclose(fpo);
fclose(fpt);
printf("RECORD UPDATED");
}
}
/* FUNCTION TO SORT THE RECORD */
void sort()
{
int a[20], count = 0, i, j, t, c;
FILE *fpo;
fpo = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fpo))
{
a[count] = stud.rollno;
count++;
}
c = count;
for (i = 0; i<count - 1; i++)
{
for (j = i + 1; j<count; j++)
{
if (a[i]>a[j])
{
t = a[i];
a[i] = a[j];
a[j] = t;
}
}
}
printf("Roll No.\tName\t\tMark\n\n");
count = c;
for (i = 0; i<count; i++)
{
rewind(fpo);
while (fread(&stud, sizeof(stud), 1, fpo))
{
if (a[i] == stud.rollno)
printf("\n %d\t\t %s \t\t %2f",stud.rollno, stud.name, stud.mark);
}
}
}
// FUNCTION TO CHECK GIVEN ROLL NO IS AVAILABLE //
int avlrollno(int rno)
{
FILE *fp;
int c = 0;
fp = fopen("Record", "r");
while (!feof(fp))
{
fread(&stud, sizeof(stud), 1, fp);
if (rno == stud.rollno)
{
fclose(fp);
return 1;
}
}
fclose(fp);
return 0;
}
//FUNCTION TO CHECK THE FILE IS EMPTY OR NOT
int empty()
{
int c = 0;
FILE *fp;
fp = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fp))
c = 1;
fclose(fp);
return c;
}
// MAIN PROGRAM
void main()
{
int c, emp;
do
{
printf("\n\t---Select your choice---------\n");
printf("\n\t1. INSERT\n\t2. DISPLAY\n\t3. SEARCH");
printf("\n\t4. DELETE\n\t5. UPDATE\n\t6. SORT");
printf("\n\t7. EXIT");
printf("\n\n------------------------------------------\n");
printf("\nEnter your choice:");
scanf("%d", &c);
printf("\n");
switch (c)
{
case 1:
insert();
break;
case 2:
emp = empty();
if (emp == 0)
printf("\nThe file is EMPTY\n");
else
disp();
break;
case 3:
search();
break;
case 4:
deletefile();
break;
case 5:
update();
break;
case 6:
emp = empty();
if (emp == 0)
printf("\n The file is EMPTY\n");
else
sort();
break;
case 7:
exit(1);
break;
default:
printf("\nYour choice is wrong\nPlease try again...\n");
break;
}
} while (c != 7);
}
Out put
struct student
{
int rollno;
char name[30];
float mark;
}stud;
// FUNCTION TO INSERT RECORDS TO THE FILE
void insert()
{
FILE *fp;
fp = fopen("Record", "a");
printf("Enter the Roll no :");
scanf("%d", &stud.rollno);
printf("Enter the Name :");
scanf("%s", &stud.name);
printf("Enter the mark :");
scanf("%f", &stud.mark);
fwrite(&stud, sizeof(stud), 1, fp);
fclose(fp);
}
// FUNCTION TO DISPLAY RECORDS
void disp()
{
FILE *fp1;
fp1 = fopen("Record", "r");
printf("\nRoll Number\tName\tMark\n\n");
while (fread(&stud, sizeof(stud), 1, fp1))
printf(" %d\t\t%s\t%.2f\n", stud.rollno, stud.name, stud.mark);
fclose(fp1);
}
// FUNCTION TO SEARCH THE GIVEN RECORD
void search()
{
FILE *fp2;
int r, s, avl;
printf("\nEnter the Roll no you want to search :");
scanf("%d", &r);
avl = avlrollno(r);
if (avl == 0)
printf("Roll No %d is not available in the file\n",r);
else
{
fp2 = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fp2))
{
s = stud.rollno;
if (s == r)
{
printf("\nRoll no = %d", stud.rollno);
printf("\nName = %s", stud.name);
printf("\nMark = %.2f\n", stud.mark);
}
}
fclose(fp2);
}
}
// FUNCTION TO DELETE A RECORD
void deletefile()
{
FILE *fpo;
FILE *fpt;
int r, s;
printf("Enter the Roll no you want to delete :");
scanf("%d", &r);
if (avlrollno(r) == 0)
printf("Roll no %d is not available in the file\n", r);
else
{
fpo = fopen("Record", "r");
fpt = fopen("TempFile", "w");
while (fread(&stud, sizeof(stud), 1, fpo))
{
s = stud.rollno;
if (s != r)
fwrite(&stud, sizeof(stud), 1, fpt);
}
fclose(fpo);
fclose(fpt);
fpo = fopen("Record", "w");
fpt = fopen("TempFile", "r");
while (fread(&stud, sizeof(stud), 1, fpt))
fwrite(&stud, sizeof(stud), 1, fpo);
printf("\nRECORD DELETED\n");
fclose(fpo);
fclose(fpt);
}
}
// FUNCTION TO UPDATE THE RECORD
void update()
{
int avl;
FILE *fpt;
FILE *fpo;
int s, r, ch;
printf("Enter roll number to update:");
scanf("%d", &r);
avl = avlrollno(r);
if (avl == 0)
{
printf("Roll number %d is not Available in the file", r);
}
else
{
fpo = fopen("Record", "r");
fpt = fopen("TempFile", "w");
while (fread(&stud, sizeof(stud), 1, fpo))
{
s = stud.rollno;
if (s != r)
fwrite(&stud, sizeof(stud), 1, fpt);
else
{
printf("\n\t1. Update Name of Roll Number %d", r);
printf("\n\t2. Update Mark of Roll Number %d", r);
printf("\n\t3. Update both Name and Mark of Roll Number %d", r);
printf("\nEnter your choice:");
scanf("%d", &ch);
switch (ch)
{
case 1:
printf("Enter Name:");
scanf("%s", &stud.name);
break;
case 2:
printf("Enter Mark : ");
scanf("%f", &stud.mark);
break;
case 3:
printf("Enter Name: ");
scanf("%s", &stud.name);
printf("Enter Mark: ");
scanf("%f", &stud.mark);
break;
default:
printf("Invalid Selection");
break;
}
fwrite(&stud, sizeof(stud), 1, fpt);
}
}
fclose(fpo);
fclose(fpt);
fpo = fopen("Record", "w");
fpt = fopen("TempFile", "r");
while (fread(&stud, sizeof(stud), 1, fpt))
{
fwrite(&stud, sizeof(stud), 1, fpo);
}
fclose(fpo);
fclose(fpt);
printf("RECORD UPDATED");
}
}
/* FUNCTION TO SORT THE RECORD */
void sort()
{
int a[20], count = 0, i, j, t, c;
FILE *fpo;
fpo = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fpo))
{
a[count] = stud.rollno;
count++;
}
c = count;
for (i = 0; i<count - 1; i++)
{
for (j = i + 1; j<count; j++)
{
if (a[i]>a[j])
{
t = a[i];
a[i] = a[j];
a[j] = t;
}
}
}
printf("Roll No.\tName\t\tMark\n\n");
count = c;
for (i = 0; i<count; i++)
{
rewind(fpo);
while (fread(&stud, sizeof(stud), 1, fpo))
{
if (a[i] == stud.rollno)
printf("\n %d\t\t %s \t\t %2f",stud.rollno, stud.name, stud.mark);
}
}
}
// FUNCTION TO CHECK GIVEN ROLL NO IS AVAILABLE //
int avlrollno(int rno)
{
FILE *fp;
int c = 0;
fp = fopen("Record", "r");
while (!feof(fp))
{
fread(&stud, sizeof(stud), 1, fp);
if (rno == stud.rollno)
{
fclose(fp);
return 1;
}
}
fclose(fp);
return 0;
}
//FUNCTION TO CHECK THE FILE IS EMPTY OR NOT
int empty()
{
int c = 0;
FILE *fp;
fp = fopen("Record", "r");
while (fread(&stud, sizeof(stud), 1, fp))
c = 1;
fclose(fp);
return c;
}
// MAIN PROGRAM
void main()
{
int c, emp;
do
{
printf("\n\t---Select your choice---------\n");
printf("\n\t1. INSERT\n\t2. DISPLAY\n\t3. SEARCH");
printf("\n\t4. DELETE\n\t5. UPDATE\n\t6. SORT");
printf("\n\t7. EXIT");
printf("\n\n------------------------------------------\n");
printf("\nEnter your choice:");
scanf("%d", &c);
printf("\n");
switch (c)
{
case 1:
insert();
break;
case 2:
emp = empty();
if (emp == 0)
printf("\nThe file is EMPTY\n");
else
disp();
break;
case 3:
search();
break;
case 4:
deletefile();
break;
case 5:
update();
break;
case 6:
emp = empty();
if (emp == 0)
printf("\n The file is EMPTY\n");
else
sort();
break;
case 7:
exit(1);
break;
default:
printf("\nYour choice is wrong\nPlease try again...\n");
break;
}
} while (c != 7);
}
Out put
please solve the errors in this program
ReplyDeletei have updated check iit
Deleteas salam. sir, i am a student. i have some problem about c pro. our teacher, tell us add data, delete data, update.. search.. and sorting data use array. i can do all that operation separately, but i can't understand how can i do all that operation in a single program. please help me sir please.
DeleteSalam Dear. this program will do all of the function
Deleteadd data, delete data, update.. search.. and sorting data. run this program you can see it.
Thank you sir, Thank you. Thanks a lot.
DeleteI really appreciate .
pal this code is not working
ReplyDeletei have updated check iit
Deletemay i knw where is it..because i can't find it
DeleteGet your codes working, bruh.
ReplyDeletei have updated, check it
Deleteyow the program na wuk fix the dammn thing or tek it dung!!!!!!!!!!!
ReplyDeletei have updated check iit
DeleteBumboclat Dawg! LOL
Deletesolve the errors .... and why u have used avlrollno() ????
ReplyDeletei have updated, check it. avlrollno() is used for searching
Deleteerror in this code
ReplyDeletei have updated check iit
Deletesome error can u update it pIs
Deletechutiya
ReplyDeletei have updated check iit
Deleteerror in the code
ReplyDeletehiii
ReplyDeleteplz specify (stdlib.h) header file & specify avlrollno(int)before structure then program run properly
pls i can i convert the search function to use stud.name to search the file.
ReplyDeleteif you know how to debug you can fix the errors in that program.. and thanks to shahul.. the program was fantastic tho there are some minor errors.
ReplyDeleteThis comment has been removed by the author.
ReplyDeletesir this code allows to enter same Roll n any n. of times,,,and Roll n. did not accept character with digit.
ReplyDeleteHi All when I run the program it's working. if you getting any error during compilation please let me know. You can post the screen shot and I will try to help
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteHi every one plzz help me when i compile this code that this [Error] 'avlrollno' was not declared in this scope) generated solve it please
ReplyDeletehow about id number instead of roll no
ReplyDeleteUse the code as reference and do not copy paste people!!! Please learn
ReplyDelete[Error] 'avlrollno' was not declared in this scope
ReplyDelete[Error] '::main' must return 'int'