Interview Questions

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Interview Questions

VVDN - Interview Questions II


Program 1

	#include<stdio.h>
	#include<stdlib.h>
	struct foo
	{
		void (*func)(void);
	};
	void boo()
	{
		printf("hello world\n");
	}
	main()
	{
		struct foo *myfoo;
	//		myfoo=malloc(sizeof(struct foo));
		myfoo->func=boo;
		myfoo->func();
	}
	
	
Program 1

	typedef struct
	{
	  unsigned int employee_id;
	  unsigned char age;
	  unsigned char years_of_exp;
	  unsigned int salary;
	}empolyee_info;
	
	
	typedef struct
	{
	  unsigned char a;
	  char b;
	  short c;
	  unsigned short d;
	  unsigned int e;
	}alphabets;
	
	empolyee_info emp_info[5];
	alphabets *alpha;


Program 2

	main()
	{
	  memset((void *)emp_info,0xA5,sizeof(emp_info));
	  alpha=(alphabets *)((void *)emp_info);
	  alpha+=2;
	  emp_info[1].employee_id=1315;
	  emp_info[1].age=32;
	  emp_info[1].years_of_exp=10;
	  emp_info[1].salary=100000;
	
	  printf("%d\n",(int)sizeof(alphabets));
	
	  printf("alpha->a=%d\n",alpha->a);
	  printf("alpha->b=%d\n",alpha->b);
	  printf("alpha->d=%x\n",alpha->d);
	  printf("alpha->e=%x\n",alpha->e);
	
	}
	
	
Program 3

	#include<stdio.h>
	main()
	{
	int a=0x12345678;
	void *ptr;
	ptr=&a;
	printf("0x%x\n",*(int *)&*&*(char*)ptr);
	}

Program 4

	main()
	{
	char c=125;
	c+=10;
	printf("%d\n",c);
	}
	
	
Program 5

	main()
	{
	int c=10;
	printf("%d %d %d %d\n",c++,++c,c++,++c);
	}
	

Program 6

	main()
	{
		float a=0.55,b=0.80;
		if((a && b)>0.80)
			printf("if\n");
		else
			printf("else\n");
	}
	
	
Program 7

	int function(int n)
	{
		function(1);
		printf("%d\n",n);
	}
	main()
	{
		function(1);
	}
	
	
Program 8

	main()
	{
		char ch[5];
		printf("want to print hello?(yes/no):");
		scanf("%s",ch);
		while(ch=="yes")
			printf("hello");
	}
	
	union u
	{
		int i;
		char ch;
	};
	main()
	{
		union u u1;
		u1.i=258;
		u1.ch='a';
		printf("%d\n",u1.i);
	}

Program 9

	main()
	{
		static int i=5;
		if(--i)
			main();
		printf("%d ",i);
	}
	

Program 10

	main()
	{
	char *ptr="vvdntech";
	*ptr='e';
	printf("%s",*ptr);
	}
	

Program 11

	main()
	{
	int b=4,p=2,ans;
	//ans=(int)pow(b,p);
	ans=(int)pow(4,2);
	printf("%d\n",ans);
	}
	
Program 12

	main()
	{
		int i,j,c1=0,c2=0;
		for(i=0;i<10;i++,c1++)
			for(j=0;j<20;j++,c1++);
	
		for(i=0;i<20;i++,c2++)
			for(j=0;j<10;j++,c2++);
	
	printf("c1=%d c2=%d\n",c1,c2);
		if(c1==c2)
			printf("c1==c2\n");
		else if(c1>c2)
			printf("c1>c2\n");
		else if(c1<c2)
			printf("c1<c2\n");
		else
			printf("not \n");
	}


Program 13

	#include<stdio.h>
	main()
	{
		char *a,*b;
		a=b=NULL;
		a++;
		b++;
		b++;
	//	printf("%d\n",a+b);
		printf("%d\n",a-b);
	}


Program 14

	#include<stdio.h>
	int y=10;
	main()
	{
		int x=10;
		printf("%d  %d  %d\n",x=30,x>10,x=10);
		printf("%d  %d  %d\n",y=30,y>10,y=10);
	}


Program 15

	main()
	{
		int num;
		char ch;
		scanf("%d",&num);
		scanf("%c",&ch);
		//scanf(" %c",&ch);
		switch(num)
		{
			default:printf("%c\n",ch);
		}
	}


Program 15

	main()
	{
	printf("%d %d\n", sizeof("string"), strlen("string"));
	}


Program 16

	#include<stdio.h>
	int j=0;
	#define i 0
	main()
	{
	//	int i;
	//printf("i=%d j=%d\n",i,j);
	#if((i==0)&&(j==0))
		printf("true");
	#else
		printf("false");
	#endif
	}


Program 17
	
	struct employ1
	{
		char g1;
		char g2;
		short det;
		int roll;
	}emp1;
	
	struct employ2
	{
		char g1;
		int roll;
		char g2;
		short det;
	}emp2;
	
	main()
	{
		printf("%d %d\n",sizeof(emp1),sizeof(emp2));
	}


Program 18

	#include<stdio.h>
	main()
	{
	int n=0xfffd;
	printf("%x\n",n & 1);
	}
	

Program 19

	#include<stdio.h>
	main()
	{
	unsigned char temp=0xff;
	printf("\n%d\n",temp >> 5);
	printf("\n\r %d\n",temp >> 5);
	printf("\n%d\n",temp);
	}


Program 20

	#include<stdio.h>
	main()
	{
	unsigned char a=0xaa;
	unsigned char b=0x55;
	unsigned char c;
	unsigned char d;
	c=a|b;
	d=a&b;
	printf("%x %x\n",c,d);
	}
	

Program 21

	#include<stdio.h>
	main()
	{
		unsigned int i=13;
		int count=0;
		for(;i;i>>=1)
		{
			if(i & 1)
			{
				count++;
			}
		}
		printf("%d\n",count);
	}
	

Program 22

	#include<stdio.h>
	main()
	{
	char c=125;
	c=c+10;
	printf("%d\n",c);
	}
	

Program 23

	#include<stdio.h>
	main()
	{
		int a=2;
		if(a==2)
		{
			a=~a+2<<1;
			printf("%d\n",a);
		}
	/*	else
		{
			break;
		}*/
	}
	

Program 24

	#include<stdio.h>
	main()
	{
	  int i;
	  double a=5.2;
	  char *ptr;
	  ptr=(char *)&a;
	  for(i=0;i<=7;i++)
	    printf("%d ",*ptr++);
	  printf("\n");
	  ptr=(char*)&a;
	  for(i=7;i>=0;i--)
	    if(*ptr &1<<i)
	      printf("1");
	    else
	      printf("0");
	
	  printf("\n");
	}


Program 25

	#include<stdio.h>
	main()
	{
	  int i,num,pos,pos1;
	  scanf("%x",&num);
	  scanf("%d %d",&pos,&pos1);
	  //for(i=31;i>=0;i--)
	  //if(i==30)
	  num=(num&~(1<<pos))&&(num&~(1<<pos1));
	
	  printf("%d\n",num);
	}
	

Program 26

	#include<stdio.h>
	main()
	{
	int a,b,c,i,sum=0;
	scanf("%d %d",&a,&b);
	//c=a<<b;
	for(i=0;i<b;i++)
	sum+=a;
	printf("%d\n",sum);
	}
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VVDN - Interview Experience

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VVDN - Interview Questions II

VVDN - Interview Questions II

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