Write a program to print the result of student

#include<stdio.h>
#include<conio.h>
int main()
{
int sub1,sub2,sub3,avg;
printf("enter first subject marks");
scanf("%d",&sub1);
printf("enter second subject marks");
scanf("%d",&sub2);
printf("enter third subject marks");
scanf("%d",&sub3)
avg=(sub1+sub2+sub3)/3;
if(avg>=70)
printf("distinction");
else if(avg<70 && avg>=60)
printf("first class");
else if(avg<60 && avg>=50)
printf("second class");
else if(avg>35 && avg<=60)
printf("pass class");
else
printf("fail");
}