C Programming code for Students (max_Marks, avg) Data Structures using Pointers*

Write a Modular C Programming code for Getting details of a Student who took the highest marks and Sum & Avg of marks Using Pointers*.

Read the number of students, read their information, and display the details of the students:

CODE:

#include<stdio.h>
struct student
{
char name[20];
int rno;
float marks;
};

void read(struct student *ptr, int n);
void display(struct student *ptr, int n);
void avgmarks(struct student *ptr, int n);
void maxmarks(struct student *ptr, int n);
int n, i;
struct student s[50];
    struct student *ptr;


main()
{
 ptr=&s;
printf("Enter the no. of students you want to give info: ");
scanf("%d",&n);

read(ptr,n);
avgmarks(ptr,n);
maxmarks(ptr,n);
}
void read(struct student *ptr, int n)
{
for(i=0;i<n;i++) { printf("\nEnter Details of Student %d",i+1); printf("\nEnter the Name: "); scanf("%s",&(ptr+i)->name);
printf("Enter the RollNo: ");
scanf("%d",&(ptr+i)->rno);
printf("Enter the Marks: ");
scanf("%f",&(ptr+i)->marks);
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
}
void avgmarks(struct student *ptr, int n)
{
int sum=0;
float avg;
for(i=0;i<n;i++) { sum=sum+(ptr+i)->marks;
}
printf("\nThe sum of all marks is = %d\n",sum);
avg=sum/n;
printf("\nThe Avarage of all marks is = %f\n\n",avg);
}
void display(struct student *ptr, int n)
{
printf("\nName: %s",(ptr+n)->name);
printf("\nRollNo: %d",(ptr+n)->rno);
printf("\nMarks: %f",(ptr+n)->marks);
printf("\n\n+++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
void maxmarks(struct student *ptr, int n)
{
int max=ptr->marks,k;
for(i=0;i<n;i++) { if ((ptr+i)->marks>max)
{
max=(ptr+i)->marks;
k=i;
}
}
printf("The Details of Student who took Highest Marks is:\n");
display(ptr,k);
}

OUTPUT

Enter the no. of students you want to give info: 3

Enter Details of Student 1
Enter the Name: Jam
Enter the RollNo: 50
Enter the Marks: 100

+++++++++++++++++++++++++++++++++++++++++++++++++

Enter Details of Student 2
Enter the Name: Coke
Enter the RollNo: 80
Enter the Marks: 30

+++++++++++++++++++++++++++++++++++++++++++++++++

Enter Details of Student 3
Enter the Name: Bull
Enter the RollNo: 200
Enter the Marks: 120

+++++++++++++++++++++++++++++++++++++++++++++++++

The sum of all marks is = 250

The Avarage of all marks is = 83.000000

The Details of Student who took Highest Marks is:

Name: Bull
RollNo: 200
Marks: 120.000000

+++++++++++++++++++++++++++++++++++++++++++++++++

Process returned 0 (0x0)   execution time : 44.351 s
Press any key to continue.

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