Global Edge placement papers with solution

#include<stdio.h>
int main()
{
 char c = 255; 
 printf ("%d",c);
 return 0;
}

#include<stdio.h>
int main()
{
   char s[10];
   scanf ("%s",s);
   printf(s);
}

If input is abcd :

#include<stdio.h>
int main()
{
int arr[]={ 1,2,3,4 };
 int *ptr ;;;;
 ptr++ = arr;
 printf("%d,%d",ptr[2],arr[2]);
 return 0;
}

what is the correct prototype of printf function ?

which is the null statement?

#include<stdio.h>
int main()
{
 200;
 printf("tricky problem");
}

#include<stdio.h>
#define islower(c)  ('a'<=(c) && (c)<='z')
#define toupper(c)  (islower(c)?(c)-('a'-'A'):(c))

main()
{
 char *p="i am fine";
 while(*p)
  printf("%c",toupper(*p++));
}

#include<stdio.h>
main()
{
 scanf("%d");
 printf();
}
which of the following is correct?

#include<stdio.h>
int main()
{
int i=-1;
i<<=2;
printf("%d\n",i);
}

#include<stdio.h>
int main()
{
int *p=10;
printf("%d\n",*p);
}