C program using Structures to read and display Student details

#include<stdio.h>
#include<conio.h>

//structure declaration
struct student
{
char name[15];
float marks_sub1;
float marks_sub2;
float marks_sub3;
float average;
};

//user defined function declaration

void setData(student* temp);
void calcAvg(student* temp);
void printData(student* temp);

//main function

void main()
{

int i;

//declare an array of student type variables
student s[5];

for( i=0;i<5;i++ )
{
printf("\nenter the student %d details",i);
//set data collects the student information
setData(&s[i]);

//calculates the average
calcAvg(&s[i]);

}

for( i=0;i<5;i++ )
{

printf("\nstudent %d details",i);
//call print data to print the student details
printData(&s[i]);
}

getch();

}

//function to print data
void printData(student* temp)
{
printf("\n\n***************************************");
printf("\nname:%s",temp->name);
printf("\nsubject1 marks:%f",temp->marks_sub1);
printf("\nsubject2 marks:%f",temp->marks_sub2);
printf("\nsubject3 marks:%f",temp->marks_sub3);
printf("\nAverage marks:%f",temp->average);
printf("\n**************************************");
}

//this function calculates the average
void calcAvg(student* temp)
{
temp->average=(temp->marks_sub1+temp->marks_sub2+temp->marks_sub3)/3;
}

//this function collects the input data
void setData(student* temp)
{

printf("\nenter the name:");
scanf("%s",temp->name);
printf("\n enter the subject1 marks:");
scanf("%f",&temp->marks_sub1);
printf("\n enter the subject2 marks:");
scanf("%f",&temp->marks_sub2);
printf("\n enter the subject3 marks:");
scanf("%f",&temp->marks_sub3);
}