Thread: Undefined Prefrence 'printf' Help???

Code:

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


main()
{
    int s1,s2,t;
    float avg;
    
    printf(" name = suleman khan");
    printf(" \nclass = bs (it)");
    Printf(" \nmarks = 180");
    scanf("%d",&s1);
    t = (s1 + s2);
    avg   = (s1 + s2)/2;
    
    if("avg<50)::&&::(s2>50")
    {
        printf("\nfail");
    }
    
    else
    if("avg=50)::&&::(avg<60")
    {
        printf("\n grade=c");
    }
    
    if("(avg>=60)::&&::(avg<70")
    {printf("\n grade=b");
    }
    
    if("avg>=70)::&&::(avg<=100")
    {
        printf("grade=a");
    }
    
    else
    print("\n better luck next time");
    
    return 0;
}

ERROR

PlZZZZZ Help
It's A Mark Sheet

Can Any Body Help?

I Know But I Can't Understand
I Am New In C Plzzz Solve The Issues And Send it Back

No Bro I got it
Thanks