Written:
1.
#include<stdio.h>
int main()
{
struct bitfield {
unsigned a:5;
unsigned c:5;
unsigned b:6;
}bit={1,3,3};
printf("%x\n",bit);
char*p=(char*)&bit;
p++;
printf("%d",*p);
return 0;
}
Ans:12
2.
void main()
{
int array[2][3]={5,10,15,20,25,30};
int (*ptr)[2][3]=&array;
printf("%d ",***ptr);
printf("%d ",*(*ptr)[1]);
printf("%d ",(*ptr)[1][2]);
}
Ans: 5 20 30
3.
void main()
{
int i=1;
i = 2+2*i++;
printf("%d",i);
}
Ans:5
4.
#define SHIFT(a,b) f=a+b;a=b;b=f;
void main()
{
int i=0,j=1,r=11,k,f;
for(k=2;k<r;k++){
SHIFT(i,j)
}
printf("%d",f);
}
Ans:55
5.
int xyz=10;
void main()
{
int xyz=20;
printf("%d",xyz);
}
Ans:20
6.
int num(int n)
{
int z;
if (n==1) return n;
int half =n/2;
int k=2*num(n/2)+half*half;
z =(n%2)? k+n: k;
return z;
}
void main()
{ printf("Main:%d",num(11));
}
Ans: Main:66
7.
void main()
{
Int a=1;
If(a=0)
Printf(“same”);
Else
Printf(“different”);
}
Ans: different
8.
#include<stdio.h>
int number(int x,int y)
{
int z;
if(y==1)
return x;
int n=number(x,y/2);
z=(y%2)? (n*n*x):(n*n);
return z;
}
void main()
{
printf("%d",number(3,7));
}
Ans:2187
9.
void main()
{
char data[2][3][2]={0,1,2,3,4,5,6,7,8,9,10,11};
printf("%o",*data[1][2]);
}
Ans:10
10.
unsigned long int (*avg())[3]
{
static unsigned long int arr[3]={1,2,3};
return &arr;
}
void main()
{
unsigned long int (*ptr)[3];
ptr=avg();
printf("%d",*(*ptr+2));
} ANS: 3
11.
#include<stdio.h>
void main()
{
char a =-5;
unsigned int b=-5;
if(a==b) printf("same");
else
printf("different");
}
Ans:same
12.
void main()
{
char str[10]="hello";
char *ptr1,*ptr2,ch;
for(ptr1=str+1;*ptr1;ptr1++)
{
for(ptr2=str;ptr2!=ptr1;ptr2++)
if(*ptr1 > *ptr2)
{
ch=*ptr2;*ptr2=*ptr1;*ptr1=ch;
}
}
printf("%s",str);
}
ANS:ollhe
13.
#define x 5+2
void main()
{
int i;
i =x*x*x;
printf("%d",i);
}
ANS:27
14.
void main(){
char str[10] = "aPPle",*ptr;
for(ptr=str;*ptr;ptr++){
if(*ptr > 'a') *ptr -='z'-'Z'
}
printf("%s",str);
}
ANS:aPPLE
15.
void main()
{
int a=280;
char *ptr = (char*)&a;
printf("%d",*ptr);
}
ANS:24
16.
void main()
{
int num,i,count;
for(num=21;num<30;num++)
{
count =0;
for(i=2;i<=num/2;i++)
{
if(num%i == 0)
{count++;
break;}
}
if(count==0 && num!=1)
printf("%d",num);
}
}
ANS:23 29
17.
void main()
{
int check=1;
switch(check)
{
case 1:printf("1");
case 2:printf("2");
case 3:printf("3");
default:printf("0");
}
}
ANS:1230
18.
#include<stdio.h>
int r()
{
int static num =10;
return num--;
}
void main()
{
for(r();r();r())
{
printf("%d",r());
}
}
ANS:852
19.
#include<stdio.h>
void main()
{
char buf[]="abc\0def";
char *str=buf;
printf("%s%c",buf+1,buf[1]);
printf("%s%c",str+1,str[1]);
printf("%d%d",sizeof(buf),sizeof(str));
}
ANS:bcbbcb84
20.
#include<stdio.h>
void main()
{
int a[10] = {5,3,8,2,1,8,5,3,4,2};
int first=0,second=0,i;
for(i=0;i<10;i++)
if(first<a[i])
first=a[i];
for(i=0;i<10;i++)
if(second < a[i] && a[i]<first)
second=a[i];
printf("%d",second);
}
ANS:5
