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#include<stdlib.h>
#include<string.h>
#include<stdio.h>
struct Student
{
int number;
char name[24];
char crsyr[10];
float GWA;
struct Student *next;
}* head;
void insert(int number, char* name, char* crsyr, float GWA)
{
struct Student * student = (struct Student *) malloc(sizeof(struct Student));
student->number = number;
strcpy(student->name, name);
strcpy(student->crsyr, crsyr);
student->GWA = GWA;
student->next = NULL;
if(head==NULL){
head = student;
}
else{
student->next = head;
head = student;
}
}
void search(int number)
{
struct Student * temp = head;
while(temp!=NULL){
if(temp->number==number){
printf("Student Number: %d\n", temp->number);
printf("Student Name: %s\n", temp->name);
printf("Student Course & Year: %s\n", temp->crsyr);
printf("GWA: %0.4f\n", temp->GWA);
return;
}
temp = temp->next;
}
printf("Student with number %d is not found !!!\n", number);
}
void update(int number)
{
struct Student * temp = head;
while(temp!=NULL){
if(temp->number==number){
printf("Record with student number %d Found !!!\n", number);
printf("Enter new name: ");
scanf("%s", temp->name);
printf("Enter new course & year: ");
scanf("%s", temp->crsyr);
printf("Enter new GWA: ");
scanf("%f",&temp->GWA);
printf("Updation Successful!!!\n");
return;
}
temp = temp->next;
}
printf("Student with number %d is not found !!!\n",number);
}
void Delete(int number)
{
struct Student * temp1 = head;
struct Student * temp2 = head;
while(temp1!=NULL){
if(temp1->number==number){
printf("Record with student number %d Found !!!\n", number);
if(temp1==temp2){
head = head->next;
free(temp1);
}
else{
temp2->next = temp1->next;
free(temp1);
}
printf("Record Successfully Deleted !!!\n");
return;
}
temp2 = temp1;
temp1 = temp1->next;
}
printf("Student with number %d is not found !!!\n", number);
}
int main()
{
head = NULL;
int choice;
char name[24];
char crsyr[10];
int number;
float GWA;
printf("1 to create student record\n2 to traverse for student record\n3 to delete student record\n4 to add student record");
do
{
printf("\nEnter Choice: ");
scanf("%d", &choice);
switch (choice)
{
case 1:
printf("Enter Student number: ");
scanf("%d", &number);
printf("Enter Student name: ");
scanf("%s", name);
printf("Enter Student Course & Year: ");
scanf("%s", crsyr);
printf("Enter GWA: ");
scanf("%f", &GWA);
insert(number, name, crsyr, GWA);
break;
case 2:
printf("Enter Student number to search: ");
scanf("%d", &number);
search(number);
break;
case 3:
printf("Enter Student number to delete: ");
scanf("%d", &number);
Delete(number);
break;
case 4:
printf("Enter Student number to update: ");
scanf("%d", &number);
update(number);
break;
}
} while (choice != 0);
}
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