//1. What does the following C Program do?
main()
{
unsigned int num;
int i;
scanf("%u",&num);
for(i=0;i<16;i++)
printf("%d",(num<<i &
1<<15)?1:0);
}
/* a. It prints all even bits from num
b. It prints all odd bits from num
c. It prints binary equivalent of num
d. It gives compilation error
e. None of these
*/
//2. What will be the output of the following
program?
#include<stdio.h>
main()
{
struct xx
{
int x;
char s;
};
struct xx *t;
t->x=5;
t->s='a';
printf(%d %c",t->x,t->s);
}
/* Ans:
_____________________ */
//3. Point out if there is any error
#include<studio.h>
#define
decode(s,t,u,m,p,e,d)m##s##u##t
#define begin
decode (a,n,i,m,a,t,e)
int begin()
{
printf("hello");
}
/* Ans:
_____________________*/
//4. Consider the declaration
static struct {
unsigned a:5;
unsigned b:5;
unsigned c:5;
unsigned d:%;
}v = (1,2,3,4);
/* V occupies:
a. 4 words
b. 2 words
c. 1 word
d. 3 words
e. none of these
*/
//5. What is the output of the following C
Program?
main(){
printf("%d%d%d",sizeof(3.14f),sizeof(3.14),sizeof(3.14l));
}
//6.
main ()
{
int i = 300;
char *ptr = &i;
*++ptr = 2;
printf("%d",i);
}
/* a. 556
b. 56
c. 554
d. Segmentation fault
e. None of these
*/
//7. Consider the following C function
Int(int n)
{
static int r = 0;
if(n<=0) return 1;
if(n>3)
{
r = n;
return f(n-2)+2;
}
return f(n-1)+r;
}
/* What is the
value of f(5)?
a. 5 b. 7 c. 9 d.
18 e. None of these
*/
//8.
main()
{
int x,y,m,n;
scanf("%d %d",&x,&y);
/*Assume x>0 and y>0*/
m=x;n=y;
while(m!=n)
{
if(m>n)
m=m-n;
else
n=n-m;
}
printf("%d",n);
}
/* The program
computes
a. x+y, using repeated subtraction
b. x mod y using repeated subtraction
c. the greatest common divisor of x and y
d. the least common multiple of x and y
e. none of the above
*/
//9. Give output
#if something ==
0
int some = 0;
#endif
main()
{
int thing = 0;
printf("%d %d\n",some,thing);
}
/* a. Compilation
error b. Segmentation Fault c. 0 garbage value d. garbage value 0
*/
// 10. Give output
main()
{
int i = 5, j = 6, z;
printf(%d",i+++j);
}
/* a. 10 b. 11 c.
12 d. Vary from compiler to compiler e. Compilation error
*/
// 11. Give output
main()
{
void swap)();
int x=10,y=8;
swap(&x,&y);
printf("x=%d y=%d,x,y);
}
void swap(int *a,
int * b)
{
*a^=*b; *b^=*a; *a^=*b;
}
/* a. x=10 y=8
b. x=8 y=10
c. x=10 y=10
d. x=8 y=8
e. Compilation Error
*/
//12. Give output
main()
{
extern out;
printf("%d",out++);
}
int out = 100;
/*a. Compilation
Error b. Garbage Value c. 100 d. 101 e. None of these */
//13. Give output
main()
{
int i, n;
char *x="girl";
n=strlen(x);
*x=x[n];
for(i=0;i<n;++i)
{
printf("%s\n",x);
x++;
}
}
/* a. lrig b. irl
rl l c. girl irl rl l d. No output e. Compilation Error
*/
//14. Give output
main()
{
int a=10,b;
a>=5?b=100:b = 200;
printf("\n%d",b);
}
/* a. 100 b. 200
c. No output d. Compilation Error e. None of these
*/
//15. Give output
main()
{
char str1[]="Hello";
char str2[]="Hello";
if(str1==str2)
printf("Equal");
else
printf("Unequal");
}
/* a. Equal b.
Unequal c. Depends on the compiler d. Compilation Error e. None of these
*/
//16. Give output
main()
{
char str[10]="Angel";
str[6]='d';
printf("%s",str);
}
/* a. Angel d
b. d
c. Angel
d. Compilation Error
e. Segmentation Fault
*/
//17. Give output
main()
{
int i = 5;
printf("%d %d %d %d
%d",i++,i--,++i,--i,i);
}
/* a. 4 5 5 5 5
b. 6 5 6 5 5
c. 5 6 5 6 6
d. 4 5 5 4 5
e. 5 6 6 5 5
*/
//18. Give output
main()
{
printf("%p",main();
}
/* a. 0x0000
b. No output
c. Some Garbage value
d. The program executes infinite times
till stack doesn't overflow.
e. Compilation Error
*/
//19. Give output
main()
{
int i = 5;
printf("%d",i+++++i);
}
/* a. 12 b. 13 c.
11 d. Vary from compiler to compiler e. None of these
*/
//20. Give output
main()
{
int i = _|_abc(10);
printf("%d\n"--i);
}
int _|_abc(int i)
{
return(i++);
}
/* a. 10
b. 9
c. Compilation Error
d. Output is unpredictable
e. None of these
*/
//21. Give output
main()
{
static int i = 5;
if(--i){
main();
printf("%d",i);
}
}
/* a. 0 0 0 0 0
b. 5 4 3 2 1
c. The program will execute till stack
doesn't overflow.
d. 4 3 2 1 0
e. No Output
*/
Note to readers: If you find any error, please mail it to 27it08@gmail.com or comment in the post. Thanks.
*/
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