Sturcture Average and print maximum Value

#include<stdio.h>
#include<string.h>
#include<conio.h>
struct student{
    char name [50];
    int id ;
    float grade;

} ;
int maximum(struct student s[5]) {
     int i,k=0;
     float max=0;
  for (i=0 ;i<5;i++) {
      if(max<s[i].grade)
      { max=s[i].grade;
       k=i;
       }

  }
      return k ;



}
float avrage(struct student s[5]) {
   float avg=0,result=0;
   int i= 0 ;
   for(i=0;i<5;i++) {
       avg=avg+s[i].grade; }
   result = avg/5 ;
   return result ;

}
int main () {
    int i,result;
    float average;
    struct student s[5] ={
        {"Tamim",111,4.0},{"Rubel",111,3.0},{"Virat",114,3.0},{"Warner",115,2.0},{"Smith",112,3.0} } ;
    result=maximum(s);
    for(i=0;i<5;i++)
    { if (i==result)
    printf("Name %s Id %d Gpa %f\n",s[i].name,s[i].id,s[i].grade); }
    average=avrage(s);
    printf("Average %.2f \n",average);

    getch () ;
}