Dev CPP Programming languages

#include<stdlib.h>
#include<stdio.h>
#include<conio.h>
int main()
{
 char reg[20];
    char name[40];
    char subject[][4] = {"TP","PT","CPT","ICP","CS"};
    int marks[5];
    int total=0;
    float average=0.00;
    printf("\t\t\t\t\tMARKS SHEET");
    printf("\n\n\nEnter the name:");
    scanf("%s",name);
    printf("\n\nenter the registration no:");
    scanf("%s",reg);
   
    printf("Enter five marks\n");
   
   
   
    for (int i=0;i<5;i++)
    {
       
        printf("\nEnter Marks of %s:\n",subject[i]);
        scanf("%d",&marks[i]);
        total=total+marks[i];
        }
        average=total/5;
    system ("cls");
    printf("\t\t\t\tMARKS SHEET");
    printf("\n\n\n name:%s",name);
    printf("\n\n reg no:%s",reg);
   

    printf("\n\n subjects \t\t\t  Marks");
    for (int i=0;i<5;i++)
   
    {
        printf("\n\n  %s \t\t\t             %d ",subject[i],marks[i]);
}
  printf("\n\n\t\t\t Total = %d",total);
  printf("\n\n\t\t\t Average= %.1f",average);
    getch();
    return 0;
}